2 Thessalonians 2:10-12 (KJV)
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.

💥In my opinion, it would require strong delusion to be induced into believing flat earth stuff. Very sobering to think; and so many people are complacent about sin.💥