How could he be?
*shrugs*
YHWH is spirit - No man has seen YHWH, right?
Who walked with Adam and Eve in the garden then? Who clothed them in the skins of animals? Who was Abraham's Friend? Who walked between the halves? Who was it that was with the two angels when they took a break in Abraham's tents on the way to determine the fate of Sodom and Gomorrah? Who was Melchizedek?