Ken Ham shows what the great delusion looks like when GOD's Word is abandoned.
"In those days there was no king in Israel, but every man did that which was right in his own eyes."
2 Thessalonians 2:10-12
10 "And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved."
11 "And for this cause God shall send them strong delusion, that they should believe a lie:"
12 "That they all might be damned who believed not the truth, but had pleasure in unrighteousness."