Summa Theologica, Part III (Tertia Pars)
Obj. 3: Further, to revere God pertains especially to man's salvation; hence it is written (Mal. 1:6): "If, then, I be a father, where is my honor? and if I be a master, where is my fear?" But men revere God the more by considering Him as elevated above all, and far beyond man's senses, hence (Ps. 112:4) it is written: "The Lord is high above all nations, and His glory above the heavens"; and farther on: "Who is as the Lord our God?" which pertains to reverence. Therefore it would seem unfitting to man's salvation that God should be made like unto us by assuming flesh.
On the contrary, What frees the human race from perdition is necessary for the salvation of man. But the mystery of the Incarnation is such; according to John 3:16: "God so loved the world as to give His only-begotten Son, that whosoever believeth in Him may not perish, but may have life everlasting." Therefore it was necessary for man's salvation that God shoul