Summary
Evangelical Christians have fallen prey to the temptations offered by Donald Trump, similar to those faced by Jesus in the desert. Trump has offered evangelicals wealth, protection, and power, leading them away from the teachings of Jesus and closer to the path set forth by the devil. The evangelical church has submitted to Trump, moving further from the values of serving the poor, healing the sick, and loving neighbors.
…and that has to do with echo chambers.
Not only do they have pastors in church reading specially selected passages of scripture (often out of context) and preaching the message of the GOP instead of the message of Jesus, but the TV and radio stations they watch and listen to, and the social media groups they’re in all are focused the same way. And all these places share the same “I have the answers; listen to me and everything will be OK for your soul” approach to life, which is easier than continually having to apply your own critical thought to the barrage of information we’re otherwise exposed to in modern society.
Also worth pointing out where you say “their minds are closed and locked” — in biblical language, the cultures of the time thought that people thought with their hearts. So all those “their hearts were hardened” scattered throughout the Bible? They’re talking about the exact same thing you are… and it’s never a good thing.