Romans 1:9

For God is my witness, whom I serve with my spirit in the gospel of his Son, how constantly I make mention of you, always in my prayers

Romans 9:1

I speak truth in Christ, I do not lie, my conscience bearing witness with me in the Holy Spirit, that

2 Corinthians 1:23

But I call upon God as a witness against my soul, that it was to spare you that I came no more to Corinth;

2 Corinthians 11:31

The God and Father of the Lord Jesus, who is blessed for evermore, knoweth that I am not lying.

1 Thessalonians 2:5

For neither at any time did we use flattering words, as ye know, nor a cloak of covetousness, God is witness;

1 Thessalonians 2:10

Ye are witnesses, and so is God, how holily, and righteously, and unblamably we conducted ourselves toward you that believe;

Treasury of Scripture Knowledge

Summary

Also now, behold, my witness is in heaven, and my record is on high.

Bible References

My witness

Romans 1:9
For God is my witness, whom I serve with my spirit in the gospel of his Son, how constantly I make mention of you, always in my prayers
Romans 9:1
I speak truth in Christ, I do not lie, my conscience bearing witness with me in the Holy Spirit, that
2 Corinthians 1:23
But I call upon God as a witness against my soul, that it was to spare you that I came no more to Corinth;
2 Corinthians 11:31
The God and Father of the Lord Jesus, who is blessed for evermore, knoweth that I am not lying.
1 Thessalonians 2:10
Ye are witnesses, and so is God, how holily, and righteously, and unblamably we conducted ourselves toward you that believe;