Romans 9:1

I say what is true in Christ, and not what is false, my mind giving witness with me in the Holy Spirit,

Galatians 1:20

Now God is witness that the things which I am writing to you are true.

1 Timothy 2:7

And of this I became a preacher and an Apostle (what I say is true, not false,) and a teacher of the Gentiles in the true faith.

Romans 1:9

For God is my witness, whose servant I am in spirit in the good news of his Son, that you are at all times in my memory and in my prayers,

Romans 8:16

The Spirit is witness with our spirit that we are children of God:

2 Corinthians 11:10

As the true word of Christ is in me, I will let no man take from me this my cause of pride in the country of Achaia.

2 Corinthians 12:19

It may seem to you that all this time we have been attempting to put ourselves in the right; but we are saying these things before God in Christ. For all things, dear brothers, are for your profit.

Romans 2:15

Because the work of the law is seen in their hearts, their sense of right and wrong giving witness to it, while their minds are at one time judging them and at another giving them approval;

2 Corinthians 1:12

For our glory is in this, in the knowledge which we have that our way of life in the world, and most of all in relation to you, has been holy and true in the eyes of God; not in the wisdom of the flesh, but in the grace of God.

2 Corinthians 1:23

But God is my witness that it was in pity for you that I did not come to Corinth at that time.

2 Corinthians 11:31

The God and Father of our Lord Jesus Christ, to whom be praise for ever, is witness that the things which I say are true.

Philippians 1:8

For God is my witness, how my love goes out to you all in the loving mercies of Christ Jesus.

1 Thessalonians 2:5

For it is common knowledge among you that we never made use of smooth-sounding false words, and God is witness that at no time were we secretly desiring profit for ourselves,

1 Timothy 1:5

But the effect of the order is love coming from a clean heart, and a knowledge of what is right, and true faith:

1 Timothy 5:21

I give you orders before God and Christ Jesus and the angels of God's selection, to keep these orders without giving thought to one side more than another.

1 John 3:19-21

In this way we may be certain that we are true, and may give our heart comfort before him,

Treasury of Scripture Knowledge

Bible References

I say

Romans 1:9
For God is my witness, whose servant I am in spirit in the good news of his Son, that you are at all times in my memory and in my prayers,
2 Corinthians 1:23
But God is my witness that it was in pity for you that I did not come to Corinth at that time.
2 Corinthians 11:31
The God and Father of our Lord Jesus Christ, to whom be praise for ever, is witness that the things which I say are true.
2 Corinthians 12:19
It may seem to you that all this time we have been attempting to put ourselves in the right; but we are saying these things before God in Christ. For all things, dear brothers, are for your profit.
Galatians 1:20
Now God is witness that the things which I am writing to you are true.
Philippians 1:8
For God is my witness, how my love goes out to you all in the loving mercies of Christ Jesus.
1 Thessalonians 2:5
For it is common knowledge among you that we never made use of smooth-sounding false words, and God is witness that at no time were we secretly desiring profit for ourselves,
1 Timothy 2:7
And of this I became a preacher and an Apostle (what I say is true, not false,) and a teacher of the Gentiles in the true faith.
1 Timothy 5:21
I give you orders before God and Christ Jesus and the angels of God's selection, to keep these orders without giving thought to one side more than another.

My conscience

Romans 2:15
Because the work of the law is seen in their hearts, their sense of right and wrong giving witness to it, while their minds are at one time judging them and at another giving them approval;
Romans 8:16
The Spirit is witness with our spirit that we are children of God:
2 Corinthians 1:12
For our glory is in this, in the knowledge which we have that our way of life in the world, and most of all in relation to you, has been holy and true in the eyes of God; not in the wisdom of the flesh, but in the grace of God.
1 Timothy 1:5
But the effect of the order is love coming from a clean heart, and a knowledge of what is right, and true faith:
1 John 3:19
In this way we may be certain that we are true, and may give our heart comfort before him,

General references

Lamentations 3:48
Rivers of water are running down from my eyes, for the destruction of the daughter of my people.
Acts 24:16
And in this, I do my best at all times to have no reason for shame before God or men.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain