Romans 9:1

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

Galatians 1:20

And what I write to you, behold, before God, I lie not.

1 Timothy 2:7

of which I was made a herald and an apostle,?? speak the truth, I lie not,?? teacher of nations in faith and truth.

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, always in my prayers

Romans 8:16

The Spirit itself is a co-witness with our spirits that we are children of God.

2 Corinthians 11:10

As the truth of Christ is in me, this boasting in respect to myself shall not be silenced in the regions of Achaia.

2 Corinthians 12:19

Do you again think that we are defending ourselves? We speak in Christ before God; all these things, beloved, are for your edification.

Romans 2:15

and they show the work of the law written in their minds, their consciences testifying with them, and their judgments mutually acusing or defending one another;??16 in the day when God shall judge the secret [doings] of men according to my gospel through Jesus Christ.

2 Corinthians 1:12

For this is our rejoicing; the testimony of our conscience that in purity and godly sincerity, not with a carnal wisdom, but with a divine grace, we have conducted ourselves in the world, and most abundantly towards you.

2 Corinthians 1:23

But I call God to witness on 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 forever, knows that I lie not.

Philippians 1:8

For God is my witness, how much I desire you all with the tender affections of Christ Jesus.

1 Thessalonians 2:5

For we used at no time a word of flattery, as you know, nor a pretext for covetousness, God is witness,

1 Timothy 1:5

But the end of the commandment is love from a pure heart and good conscience and faith unfeigned,

1 Timothy 5:21

I charge you before God, and Jesus Christ, and the elect angels, that you keep these things without prejudice, doing nothing from partiality.

1 John 3:19-21

And by this we know that we are of the truth, and shall assure our hearts before him;

Treasury of Scripture Knowledge

Summary

I say the truth in Christ, I lie not, my conscience also bearing me witness in the Holy Ghost,

General references

Bible References

I say

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, always in my prayers
2 Corinthians 1:23
But I call God to witness on 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 forever, knows that I lie not.
2 Corinthians 12:19
Do you again think that we are defending ourselves? We speak in Christ before God; all these things, beloved, are for your edification.
Galatians 1:20
And what I write to you, behold, before God, I lie not.
Philippians 1:8
For God is my witness, how much I desire you all with the tender affections of Christ Jesus.
1 Thessalonians 2:5
For we used at no time a word of flattery, as you know, nor a pretext for covetousness, God is witness,
1 Timothy 2:7
of which I was made a herald and an apostle,?? speak the truth, I lie not,?? teacher of nations in faith and truth.
1 Timothy 5:21
I charge you before God, and Jesus Christ, and the elect angels, that you keep these things without prejudice, doing nothing from partiality.

My conscience

Romans 2:15
and they show the work of the law written in their minds, their consciences testifying with them, and their judgments mutually acusing or defending one another;??16 in the day when God shall judge the secret [doings] of men according to my gospel through Jesus Christ.
Romans 8:16
The Spirit itself is a co-witness with our spirits that we are children of God.
2 Corinthians 1:12
For this is our rejoicing; the testimony of our conscience that in purity and godly sincerity, not with a carnal wisdom, but with a divine grace, we have conducted ourselves in the world, and most abundantly towards you.
1 Timothy 1:5
But the end of the commandment is love from a pure heart and good conscience and faith unfeigned,
1 John 3:19
And by this we know that we are of the truth, and shall assure our hearts before him;

General references

Acts 24:16
And in this also I endeavor always to have a conscience without offense towards God and man.