God then endowed the completed (finally "evolved" in both body and brain?) physical proto-man that He had made (Adam) with his Spirit, and, at that point -- and for the first time in untold millions of years of developmental history since Creation of the universe -- a man existed truly "in the Image of God'. God (Spirit) ensouled man with a like sprit -- and, finally man (plus spirit) was truly "in the image of God".
Man's (Adam's) physical body (including brain) was finally formed (developed, matured, ?"evolved"?) to the point of being suitable as a "temple of the Holy Spirit". And that body was designed to survive in (and "have dominion over" God's (earthly, at least) creation .
Nowhere in Scripture (Michaelangelo, et al. notwithstanding) is God described as normally inhabiting a physical body even remotely resembling man's. In fact, Jesus Himself had to "take upon Himself the form of a man" by being incarnated here.