Jeremiah 8:17   
For, behold, I will send serpents,
 cockatrices, among you, which will
not be charmed, and they shall bite you,
saith the LORD.

Who and what are the Ufo's and
Aliens that many have/do experience?

2 Thessalonians 2:11  
And for this cause God shall send them
strong delusion, that they should
believe a lie: