The bible is BS, insofar as prophecy. If you look for a map of the known world, according to the bible, you'll find it is very small, reaching only to present-day Iran, to the East, the edges of Eastern Europe to North East, Greece to the North, and part of North Africa (Egypt) to the west.
As for Iran attacking the US, just like Iraq did not, and could not, Iran cannot, and isn't stupid enough to, attack the US. The real issue is Israel, as others have said, wanting us to protect them from an attack from Iran that is frankly not going to come. Israel needs to work out a fair agreement with the Palestinians, in order to secure the approval of the rest of the Middle East.
The real tragedy is taking place now: 1 million Iranians dead, in the last ten years, as a result of US sanctions that have starved children and elderly people. And why are there sanctions? Because the Iranians had a revolution, toppled the US-installed Shah of Iran and kidnapped a few Americans as revenge.
By the way, our beef was not the Americans. Our beef was them refusing to follow our economic, and social, policies. We want nations to do what we say they need to do, and Iran flipped us off.
Bottom line: we are not the world's policeman, we need to draw back our reach and worry about our own nation and strengthening, in a respectful way, the nations in our own region: the Latin American nations. The rest of the world should be of minimal interest.