<p>5:37 <i>And the Father that sent me, He has testified of me. You have neither heard His voice at any time, nor seen His shape</i>- They, sitting as judges of the Lord Jesus, had refused to hear His testimony about His Son. God's testimony to his Son was in the works or miracles (:36). But although like Nicodemus the Jews had no choice but to accept they had been done, they refused to accept the testimony made by them. Hearing God's voice and seeing His shape allude to Moses; and the Jews would of course agree that Moses was supreme in Judaism, and indeed they had not heard God's voice or seen the outline of His personal shape another argument for the existence of God in a corporeal form. But the Lord's idea was that those who had heard His voice and 'seen' / perceived Him, had witnessed a theophany far greater than what Moses saw- the allusions are to the prologue again, where the similarities with Moses are outlined.</p><p>It could be of course that the Lord is speaking here by way of glaring contrast: Moses earnestly desired to see God's shape, to view Him, to completely understand Him. This was denied him- but not Jesus. The similarity and yet difference between Moses and Jesus is really brought out here. And again, Moses is shown to be representative of sinful Israel; as he lifted up the serpent, so they would lift up Christ; as he failed to see the Father's &quot;shape&quot;, so they did too.</p>