The Lord Jesus Christ prophesied that religious deception would be very prevalent in the End Times. The devil is the master of deception. He watches closely everything the Lord does and tries to counterfeit it. "And no wonder, for satan himself masquerades as an angel of light" (2 Cor. 11:14).
We can expect him to make every attempt to produce false signs that will draw people away from God. He has been in the counterfeiting business from the beginning of time.
The Bible speaks about "false Christs" and "false prophets" in the End Times and "Religion and the Return of Christ" takes a look at some of them.