However, the "strong delusion" is something sent by God Himself in the last days. (See 2 Thess. 2) Those who don't know Him will drown in the delusion, while those who do know Him will need to cling to Truth. "Thy Word is Truth."
Thank you.
"And let us not neglect our meeting together, as some people do, but encourage one another, especially now that the day of his return is drawing near." Heb. 10:25