God gave man free will. Lucifer, the antithesis has always strove to take the gift away. Will He Succeed? No...but he will try.

In his role as the prince of the power of the air, he and his fallen ones will try their best. He sends strange and unnatural critters capable of doing "miracles", and they will be welcomed by many who do not see.

Even now, many wish for a friendly alien appearance. They will not be disappointed. "Aliens" Indeed are coming. It's Lucifer's final act.

Matt 24:21-26
21 For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
22 And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
23 Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.
24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
25 Behold, I have told you before.
26 Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, he is in the secret chambers; believe it not. (KJV)

For details, see Rev 9: https://www.biblegateway.com/passage/?search=Revelation+9&version=KJV