Just think, Marduk is older than the God of the bible.
So are Brahma, Aphrodite, Vishnu, Tishtrya, Shiva, Ganapati, Poseidon, Saraswati, Lakshmi, Zeus Durga Devi, Guanyin, Heram Jade Emperor, Wangmu Niangniang, Yan Wang, Demeter, Mithra., Long Wang, Nüwa, Athena, Caishen, Apollo Chang’e, Amun-Ra, Artemis Isis, Osiris, Ares, Horus,Thoth, Hephaestus, Nana-Buluku, Obatala, Hermes, Olorun, Hvar Ksata, Yemaya., Oba, Rashnu, Oko, Dionysus, Osanyin,Verethragna, Olokun... and, of course, a great many more have been lost in time, for lack of stone monuments, and because their peoples have been exterminated or subsumed by others.
The Hebrews are a relatively young people. While their creation myth is clearly borrowed from older Mesopotamian peoples, and several other Genesis stories are from the public domain, everything after Abraham is pretty much their own family saga.