The only begotten son in the bosom of the father, he  hath declared him. John 5:37 And the father himself, which hath sent me, hath borne witness of me, You have neither heard his voice at any time, not seen his form. Was Jesus then saying that no man period has seen or heard the father’s voice? Matt. 3:16 “And Jesus, when he was baptized, went straightway out of the water: and ,Lo, the heavens were opened unto Him, and he saw the Spirit of God descending like a dove and lighting upon him: 17. And lo a voice from heaven, saying, This is my beloved Son, in whom I am well pleased. (Also Mark 1:11) Didn’t John the Baptist at least hear the voice of the father? Matt. 17:5 While he yet spoke, behold, a bright cloud overshadowed them: and behold a voice out of the cloud, which said, This is my beloved Son in whom I am well pleased; Who heard that? It was Peter, James and John. We might readily ask, why and how could John possibly be referring to a physical hearing in John 5:37, which was written decades after the actual event of Matt.17. Back to John 5:18 Jesus was addressing who? The Jews!  I John 4:12 “NO man hath seen God at any time, If we love one another, God dwelleth in us, and his love is perfected in us. This verse doesn’t say heard, only seen. 3John 1:11 Beloved, follow not that which is evil, but that which is good. He that doeth good is of God, but he that doeth evil hath not seen God. The real meaning of the Greek word seen here is referring to mental or spiritual perceiving of God. We as 21 century Christians have not physically seen or heard God but we know him and see him, if we keep his commandments. I John 2:3 But we have never actually met Him or Jesus yet. John 6:46 Not that any man hath seen the father, save he which is of God he hath seen the father. John uses “seen” as “know” and perceive. If you’re a believer, you have “seen” God, if not you have not.John 8:19 Then said they unto him, Where is thy father? Jesus answered, Ye neither know me, nor my Father: If ye had known me, you should have known my father also. John 14:9 He that hath seen me hath seen the Father. This word “seen” is directly connected to being taken metaphorically and not literally.

This above is just a part of a great article from Richard Fix it can and should be read in it entirety @ http://www.israelofgod.org/JesusOTGod.htmp>