God is eternal whether he is outside of time or not. Just because God is eternal it does not mean that his statement in Exodus or the account in Genesis is not to be taken literally.
Frankly what I find interesting is the way people go out of their way to insist first that God did not create the world in six days and then as time goes on they begin to doubt the whole idea of creation and buy into the whole idea that the universe is self existent and that God had nothing to do with his own creation.
The fact of the matter is that when you read the Exodus account and the Genesis story, it is clear that God intended to convey the idea that while he could have created the whole universe in a nanosecond, he took HIS time and did it in 6 days.
Foolish? Perhaps.
(1Co 2:14) But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.
1Co 3:19 For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.
The NT does make a big deal out of the inspiration of the OT....therefore out of the creation stories.
Jesus cited them as literal examples: “God made them male and female.”