{"id":42091,"date":"2014-07-14T00:00:00","date_gmt":"2014-07-14T00:00:00","guid":{"rendered":"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/"},"modified":"2014-07-14T00:00:00","modified_gmt":"2014-07-14T00:00:00","slug":"experiment-shows-how-law-leads-to-sin","status":"publish","type":"sermon-illustrations","link":"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/","title":{"rendered":"Experiment Shows How the Law Leads to Sin"},"content":{"rendered":"<p>Robert Cialdini, a researcher and an expert on the theory of persuasion, conducted an experiment at the Petrified Forest National Park in Arizona. The park had a problem, as it made clear on a warning sign:<\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>YOUR HERITAGE IS BEING VANDALIZED EVERY DAY BY THEFT LOSSES OF PETRIFIED WOOD OF 14 TONS A YEAR, MOSTLY A SMALL PIECE AT A TIME.<\/p>\n\n<\/blockquote>\n\n<p>The sign plainly appealed to the visitors&#39; sense of moral outrage. Cialdini wanted to know if this appeal was effective. So he and some colleagues ran an experiment. They seeded various trails throughout the forest with loose pieces of petrified wood, ready for the stealing. On some trails, they posted a sign warning not to steal; other trails got no sign. The result? The trails with the warning sign had nearly three times <em>more<\/em> theft than the trails with no signs.<\/p>\n\n<p>How could this be? Cialdini concluded that the park&#39;s warning sign, designed to send a moral message, perhaps sent a different message as well. Something like: <em>Wow, the petrified wood is going fast&mdash;I&#39;d better get mine now!<\/em> Or: <em>Fourteen tons a year!? Surely it won&#39;t matter f I take a few pieces.<\/em><\/p>","protected":false},"author":30,"featured_media":0,"template":"","tax_ctp_audience":[],"tax_ctp_authors":[],"tax_ctp_categories":[165],"tax_ctp_format":[171],"tax_ctp_illustration_types":[411],"tax_ctp_multimedia":[],"tax_ctp_point_editor":[],"tax_publications":[140],"tax_ctp_tags":[4018,4085,4088,4341,4342,4360,4366,4977,4978,5076,5134,5150,5155],"tax_ctp_topics":[],"class_list":["post-42091","sermon-illustrations","type-sermon-illustrations","status-publish","hentry","tax_publications-ct-pastors","tax_ctp_tags-freedom","tax_ctp_tags-gospel","tax_ctp_tags-grace","tax_ctp_tags-law","tax_ctp_tags-law-grace","tax_ctp_tags-legalism","tax_ctp_tags-liberty","tax_ctp_tags-sin","tax_ctp_tags-sin-nature","tax_ctp_tags-stealing","tax_ctp_tags-temptation","tax_ctp_tags-theft","tax_ctp_tags-thief"],"acf":{"scripture_references":[{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null},{"first_verse":null,"add_second_verse":false,"second_verse":null}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Experiment Shows How the Law Leads to Sin - CT Pastors<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Experiment Shows How the Law Leads to Sin - CT Pastors\" \/>\n<meta property=\"og:description\" content=\"Robert Cialdini, a researcher and an expert on the theory of persuasion, conducted an experiment at the Petrified Forest National Park in Arizona. The park had a problem, as it made clear on a warning sign: YOUR HERITAGE IS BEING VANDALIZED EVERY DAY BY THEFT LOSSES OF PETRIFIED WOOD OF 14 TONS A YEAR, MOSTLY Read more...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/\" \/>\n<meta property=\"og:site_name\" content=\"CT Pastors\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/CTPastors\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.christianitytoday.com\/pastors\/wp-content\/uploads\/sites\/19\/2025\/12\/ogimage.png?resize=1200,628\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@CTpastors\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/\",\"url\":\"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/\",\"name\":\"Experiment Shows How the Law Leads to Sin - CT Pastors\",\"isPartOf\":{\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/#website\"},\"datePublished\":\"2014-07-14T00:00:00+00:00\",\"dateModified\":\"2014-07-14T00:00:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.christianitytoday.com\/pastors\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Experiment Shows How the Law Leads to Sin\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/#website\",\"url\":\"https:\/\/www.christianitytoday.com\/pastors\/\",\"name\":\"CT Pastors\",\"description\":\"Timeless wisdom for pastors with forward-thinking solutions\",\"publisher\":{\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.christianitytoday.com\/pastors\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/#organization\",\"name\":\"Christianity Today\",\"url\":\"https:\/\/www.christianitytoday.com\/pastors\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.christianitytoday.com\/pastors\/wp-content\/uploads\/sites\/19\/2025\/08\/logo_ctpastors_black.svg\",\"contentUrl\":\"https:\/\/www.christianitytoday.com\/pastors\/wp-content\/uploads\/sites\/19\/2025\/08\/logo_ctpastors_black.svg\",\"caption\":\"Christianity Today\"},\"image\":{\"@id\":\"https:\/\/www.christianitytoday.com\/pastors\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/CTPastors\",\"https:\/\/x.com\/CTpastors\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Experiment Shows How the Law Leads to Sin - CT Pastors","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/","og_locale":"en_US","og_type":"article","og_title":"Experiment Shows How the Law Leads to Sin - CT Pastors","og_description":"Robert Cialdini, a researcher and an expert on the theory of persuasion, conducted an experiment at the Petrified Forest National Park in Arizona. The park had a problem, as it made clear on a warning sign: YOUR HERITAGE IS BEING VANDALIZED EVERY DAY BY THEFT LOSSES OF PETRIFIED WOOD OF 14 TONS A YEAR, MOSTLY Read more...","og_url":"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/","og_site_name":"CT Pastors","article_publisher":"https:\/\/www.facebook.com\/CTPastors","og_image":[{"width":1200,"height":628,"url":"https:\/\/www.christianitytoday.com\/pastors\/wp-content\/uploads\/sites\/19\/2025\/12\/ogimage.png?resize=1200,628","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_site":"@CTpastors","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/","url":"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/","name":"Experiment Shows How the Law Leads to Sin - CT Pastors","isPartOf":{"@id":"https:\/\/www.christianitytoday.com\/pastors\/#website"},"datePublished":"2014-07-14T00:00:00+00:00","dateModified":"2014-07-14T00:00:00+00:00","breadcrumb":{"@id":"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.christianitytoday.com\/pastors\/preaching\/sermon-illustrations\/experiment-shows-how-law-leads-to-sin\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.christianitytoday.com\/pastors\/"},{"@type":"ListItem","position":2,"name":"Experiment Shows How the Law Leads to Sin"}]},{"@type":"WebSite","@id":"https:\/\/www.christianitytoday.com\/pastors\/#website","url":"https:\/\/www.christianitytoday.com\/pastors\/","name":"CT Pastors","description":"Timeless wisdom for pastors with forward-thinking solutions","publisher":{"@id":"https:\/\/www.christianitytoday.com\/pastors\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.christianitytoday.com\/pastors\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.christianitytoday.com\/pastors\/#organization","name":"Christianity Today","url":"https:\/\/www.christianitytoday.com\/pastors\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.christianitytoday.com\/pastors\/#\/schema\/logo\/image\/","url":"https:\/\/www.christianitytoday.com\/pastors\/wp-content\/uploads\/sites\/19\/2025\/08\/logo_ctpastors_black.svg","contentUrl":"https:\/\/www.christianitytoday.com\/pastors\/wp-content\/uploads\/sites\/19\/2025\/08\/logo_ctpastors_black.svg","caption":"Christianity Today"},"image":{"@id":"https:\/\/www.christianitytoday.com\/pastors\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/CTPastors","https:\/\/x.com\/CTpastors"]}]}},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/sermon-illustrations\/42091","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/sermon-illustrations"}],"about":[{"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/types\/sermon-illustrations"}],"author":[{"embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/users\/30"}],"version-history":[{"count":1,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/sermon-illustrations\/42091\/revisions"}],"predecessor-version":[{"id":42092,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/sermon-illustrations\/42091\/revisions\/42092"}],"wp:attachment":[{"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/media?parent=42091"}],"wp:term":[{"taxonomy":"tax_ctp_audience","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_audience?post=42091"},{"taxonomy":"tax_ctp_authors","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_authors?post=42091"},{"taxonomy":"tax_ctp_categories","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_categories?post=42091"},{"taxonomy":"tax_ctp_format","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_format?post=42091"},{"taxonomy":"tax_ctp_illustration_types","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_illustration_types?post=42091"},{"taxonomy":"tax_ctp_multimedia","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_multimedia?post=42091"},{"taxonomy":"tax_ctp_point_editor","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_point_editor?post=42091"},{"taxonomy":"tax_publications","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_publications?post=42091"},{"taxonomy":"tax_ctp_tags","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_tags?post=42091"},{"taxonomy":"tax_ctp_topics","embeddable":true,"href":"https:\/\/www.christianitytoday.com\/pastors\/wp-json\/wp\/v2\/tax_ctp_topics?post=42091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}