John 8:19
Then said they to him, Where is thy Father? Jesus answered, Ye neither know me nor my Father. If ye had known me, ye would have known my Father also.
John 8:54-55
Whom makest thou thyself? Jesus answered, If I honour myself, my honour is nothing: it is my Father that honoureth me, of whom ye say, He is our God.
John 16:3
These things will they do, because they have not known the Father nor me.
John 17:3
And this is life eternal, to know thee, the only true God, and Jesus Christ, whom thou hast sent.
John 17:6
I have manifested thy name to the men whom thou hast given me out of the world. Thine they were, and thou hast given them me, and they have kept thy word.
Titus 1:16
They profess to know God, but by their works they deny him, being abominable and disobedient, and void of judgment as to every good work.
1 John 2:3-4
And hereby we know that we know him, if we keep his commandments.