The Bible is replete with things like the divine council, the Watchers, etc. Aliens are literally ZERO problem for religious anons if they stop ignoring the Old Testament. Evangelicals - kindly get it together. Something's coming.
Here's a reasonably well-researched place to start that made the rounds the other day:
https://youtu.be/h8WwWrbWZVc
Several good books exist as well. Point is, the Bible not only isn't silent on ETs, it's full of them.