https://en.wikipedia.org/wiki/En%C5%ABma_Eli%C5%A1

While it used to be viewed that Enuma Elish was composed in the reign of Hammurabi,[31] most scholars now believe it is unlikely[32] and accept a dating to the Second Dynasty of Isin.[33][34][35][36] During the Old Babylonian period, Marduk was not the pantheon head,[37] appearing instead as the mediator between the great gods and Hammurabi,[38] and there is no evidence that Hammurabi or his successors promoted Marduk at the expense of the other gods.[39] It was during the Second Dynasty of Isin that Marduk started to be referred to as the king of the gods, with the return of the statue of Marduk from Elam by Nebuchadnezzar I.[40] Sommerfield’s suggestion that Enuma Elish should be dated instead to the Kassite period,[41] was countered by Lambert,[42] but the god list An = Anum does give the number 50, which traditionally belongs to Enlil, to Marduk.[43] Dalley still proposes that Enuma Elish was written during the Old Babylonian Period,[44] but other scholars find her proposal unlikely.[45]

1595 BCE