alternatehistory.com

How would you unite the Kingdom of Israel and the Kingdom of Judah and turn it into an empire every bit as large and as powerful as the Persian empire of otl with a pod of 930BC or earlier?
I would first change Judaism to the point that it becomes a proseletyzing religion like Islam, bringing the one true God to the rest of the world.
What I want to see is for this empire to take Persia's place and have an Israelite army conquer Persia and then eventually clash with Greece to the point that instead of the Persian Army being defeated at Marathon or (some place in Greece) it would be an Israelite army that is defeated by the Greeks in a Greco-Israelite War.
Top