Romans 1:9

For God is my witness, whom I serve with my spirit in the Gospel of his Son, how incessantly I make mention of you,

Romans 9:1

I SPEAK the truth in Christ, I lie not, (my conscience also bearing witness to me in the Holy Ghost,)

2 Corinthians 1:23

But I appeal to God as a witness unto my soul, that to spare you I have not yet come to Corinth:

2 Corinthians 11:31

The God and Father of our Lord Jesus Christ, who is blessed for evermore, knoweth that I lie not.

1 Thessalonians 2:5

For neither at any time used we insinuating language, as ye know, nor a pretext for covetousness; God is witness:

1 Thessalonians 2:10

Ye are witnesses, and God also, how holily, and justly, and faultlessly we conducted ourselves among 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 incessantly I make mention of you,
Romans 9:1
I SPEAK the truth in Christ, I lie not, (my conscience also bearing witness to me in the Holy Ghost,)
2 Corinthians 1:23
But I appeal to God as a witness unto my soul, that to spare you I have not yet come to Corinth:
2 Corinthians 11:31
The God and Father of our Lord Jesus Christ, who is blessed for evermore, knoweth that I lie not.
1 Thessalonians 2:10
Ye are witnesses, and God also, how holily, and justly, and faultlessly we conducted ourselves among you that believe: