There were many praying Jews in Judah at the time of the Babylonian invasion. Daniel, Ezekiel and Jeremiah are just a few examples.
Bible says Jesus has ALREADY died for the sins of THE WHOLE WORLD (1 John 2:2).
Yet the WHOLE WORLD isn't save or are you a universalist? There will be much tribulation in the world and God sends it. It's been going on for awhile.
"God would be unjust to have judged all the sins of the whole world on the body of Jesus Christ and turn around and judge the same sin now again now. That would be patently unjust and God is not unjust but righteous."
Again, the whole world isn't saved. Many will suffer the "second death" and suffer eternal damnation. And that is righteous.
So God is doing what now? Judging the world? NO!
God was in Christ, reconciling the world unto himself, not imputing their trespasses unto them; and has committed unto us the word of reconciliation (2 Cor 5:19).
Our job is the message of reconciliation - that is, influence as many as possible to receive Jesus. God isn't mad at anyone, He's pleading with people to come to Jesus.