If you wanted to look at the origins of the conflict, you'd have to travel back in time at least to the #BattleOfKadesh in 1274 BCE*, following historic principles.
@specked and I did just that a couple of days ago:
If you really wanted to go to the first conflict, you'd have to travel back about two million years ago, when the first 2 tribes of #HomoErectus had a disagreement in #Palestine: 😉