Romans 1:9
For God, whom I serve with my spirit in the gospel of his Son, is my witness, how incessantly I make mention of you,
Romans 9:1
I say the truth in Christ, I lie not; my conscience also bearing me witness in the Holy Ghost?
2 Corinthians 1:23
But I call God for a record on my soul, that to spare you, I came not as yet to Corinth.
2 Corinthians 11:31
The God and Father of the Lord Jesus Christ, who is blessed for ever, knoweth that I lie not.
1 Thessalonians 2:5
For neither at any time used we flattering words, as ye know, nor a cloak of covetousness: God is witness:
1 Thessalonians 2:10
Ye are witnesses and God, how holily and justly and unblameably we behaved among you that believe: