Tertullian

“ For in all these passages He had shown Himself to be the Father’s Commissioner, [12] through whose agency even the Father could be seen in His works, and heard in His words, and recognised in the Son’s administration of the Father’s words and deeds. The Father indeed was invisible, as Philip had learnt in the law, and ought at the moment to have remembered: “No man shall see God, and live.” [13] So he is reproved for desiring to see the Father, as if He were a visible Being, and is taught that He only becomes visible in the Son from His mighty works, and not in the manifestation of His person. ”

“ It is therefore by His mighty works, and by the words of His doctrine, that the Father who dwells in the Son makes Himself visible—even by those words and works whereby He abides in Him, and also by Him in whom He abides ”

“ Wherefore? Because “I came forth from the Father, and am come into the world” [6] and, “I am the way: no man cometh unto the Father, but by me;” [7] and, “No man can come to me, except the Father draw him;” ”