John 8:19

Thou talkest much of thy Father, where is he? We know no father which thou hast but the carpenter, Joseph; we do not look upon him as so credible a witness in the case, as to take his testimony in such a matter as this is. Christ tells them, that the reason why they did not know the Father, was because they did not know and acknowledge, receive and believe him; for if they had received and believed him, they would not then have been at such a loss to have known where his Father was, or who he was. The eternal Father is not to be known but in, and by, and through the Son.