1 Thessalonians 4:5
And not for the mere gratification of his passions, like the Gentiles who know nothing of God;
2 Thessalonians 1:8
Then he will 'inflict punishment upon those who refuse to know God, and upon those who turn a deaf ear' to the Good News of Jesus, our Lord.
John 17:25
O righteous Father, though the world did not know thee, I knew thee; and these men knew that thou has sent me as thy Messenger.
Acts 17:23
For as I was going about, looking at your sacred shrines, I came upon an altar with this inscription--'To an Unknown God.' What, therefore, you worship in ignorance, that I am now proclaiming to you.
1 Corinthians 15:34
Awake to a righteous life, and cease to sin. There are some who have no true knowledge of God. I speak in this way to shame you.