Actually I have come to believe that man as erect, with head, arms and legs might be a possibility.
Right at the beginning it says Adam and Eve "heard the sound of the LORD God walking in the garden." A disembodied spirit does not make a sound and doesn't walk.
Gen 32:24 Then Jacob was left alone; and a Man wrestled with him until the breaking of day. . . . 30 So Jacob called the name of the place Peniel: "For I have seen God face to face, and my life is preserved."
Exo 33:11 So the LORD spoke to Moses face to face, as a man speaks to his friend.
Joh_1:18 No one has seen God at any time.
I am not saying that God in totality or the Godhead has these features, but maybe the Son sees Himself in this manner and thus made man in this image.
So, the "God" or "Lord" the people above saw, spoke to and even wrestled with was the Word who was in the beginning and was with God and was God.
I agree it was the
Word of God they heard in the Garden, the KJV has it right:
And they heard the
voice (06963 קוֹל qowl) of the LORD God walking in the garden in the cool of the day: and Adam and his wife hid themselves from the presence of the LORD God amongst the trees of the garden. (Gen. 3:8 KJV)
Like most Hebrew nouns it has various meanings and 49 times in the KJV its translated as "sound", but its most common usage is "voice" 383 times:
06963 קוֹל qowl {kole} or קֹל qol {kole}
Meaning: 1) voice, sound, noise 1a) voice 1b) sound (of instrument) 2) lightness, frivolity
Origin: from an unused root meaning to call aloud; TWOT - 1998a,2028b; n m
Usage: AV -
voice 383, noise 49, sound 39, thunder 10, proclamation + 05674 4, send out + 05414 2, thunderings 2, fame 1, misc 16; 506
And your point is well taken by all, how would God's walking sound if not as the footsteps of the Pre-incarnate Jesus?
But if the image has any reference to standing erect etc., its part of a greater package.
God often appears as a man, even the angel of the LORD has the appearance of a man.
Notice how it first appears all three "men" are "Yahweh":
NKJ Genesis 18:1 Then
the LORD appeared to him by the terebinth trees of Mamre, as he was sitting in the tent door in the heat of the day.
2 So he lifted his eyes and looked, and
behold, three men were standing by him; and when he saw them, he ran from the tent door to meet them, and bowed himself to the ground, (Gen. 18:1-2 NKJ)
I see the doctrine of the Holy Trinity implied in all such texts even if later only one of them speaks as Yahweh (Gen. 18:13ff).
So did the early Jewish and Gentile Christians. How else could John write "In the Beginning was the Word, and the word was with God, and the Word was God" (Jn. 1:1).