John 8:19
Then they said to Him, Where is thy Father? Jesus responded; You know neither me nor my Father; if you knew me, you would also know my Father.
John 8:54-55
Jesus responded, If I may glorify myself, my glory is nothing: my Father is the one glorifying me; whom you say, that, He is our God;
John 16:3
And they will do these things, because they did not know the Father, nor me.
John 17:3
But this is eternal life, that they know thee the only true God, and Jesus Christ whom thou didst send.
John 17:6
I have manifested thy name, to the men whom thou didst give me out of the world. They were thine, and thou didst give them to me; and they have kept thy word:
Titus 1:16
They profess to know God, but deny him by their works, being abominable, and unbelieving, and reprobate unto every good work.
1 John 2:3-4
And in this we know that we have known him, if we are keeping his commandments.