I know plenty of Blood-bought, repented up, Spirit-led Evangelical Christians who at least allow the possibility for ET's if not are convinced strongly of their existence.
And one of the Christians who I've known who most lived closest to God of all I've known--she knew from a very early age from her awareness from God that there are many vast other cultures, worlds etc. . . . and also evil in other places of the universe.
Knowing her as I did, I believed her. Nothing in the Bible would prevent anything she said. Besides if she was adamant that God said something was definnitely going to happen. It always happened.
I'm sorry you believe this. I hope you read the bible more and believe more of what you read. That middle paragraph is really something. First it's hard to read and second it's just sad.