Galatians 1:20

Now, as touching the things which I am writing to you, lo! before God, I am not guilty of falsehood: -

Romans 9:1

Truth, say I, in Christ, I utter no falsehood, - my conscience bearing witness with me in the Holy Spirit, -

2 Corinthians 11:31

The God and Father of our Lord Jesus, knoweth - He who is blessed unto the ages - that I am not speaking falsely:

2 Corinthians 11:10-11

Truth of Christ is in me, that, this boasting, shall not be silenced unto me, in the regions of Achaia.

Treasury of Scripture Knowledge

Summary

Now the things which I write unto you, behold, before God, I lie not.

Bible References

Behold

Romans 9:1
Truth, say I, in Christ, I utter no falsehood, - my conscience bearing witness with me in the Holy Spirit, -
2 Corinthians 11:10
Truth of Christ is in me, that, this boasting, shall not be silenced unto me, in the regions of Achaia.