John 8:55
And yet you have not known him. But I know him; and if I should say that I do not know him, I should be like yourselves, a liar. But I know him, and I keep his word.
Romans 1:28
And as they refused to acknowledge God, God delivered them up to an undiscerning mind, to do detestable things;
1 Corinthians 15:34
Awake, as you should, to soberness, and sin not; for some have not the knowledge of God. I speak this to your shame.
Revelation 2:11
He that has an ear, let him hear what the Spirit says to the churches. He that overcomes shall not be hurt by the second death.
Revelation 2:29
He that has an ear, let him hear what the Spirit says to the churches.