Genesis 31:50

If you are cruel to my daughters, or if you take other wives in addition to my daughters, then though no man is there to see, God will be the witness between us.

Jeremiah 42:5

Then they said to Jeremiah, May the Lord be a true witness against us in good faith, if we do not do everything which the Lord your God sends you to say to us.

Jeremiah 29:23

Because they have done shame in Israel, and have taken their neighbours' wives, and in my name have said false words, which I did not give them orders to say; and I myself am the witness, says the Lord.

Judges 11:10

And the responsible men of Gilead said to Jephthah, May the Lord be our witness: we will certainly do as you say.

1 Samuel 12:5

Then he said, The Lord is witness against you, and the man on whom he has put the holy oil is witness this day that you have seen no wrong in me. And they said, He is witness.

Micah 1:2

Give ear, you peoples, all of you; give attention, O earth and everything in it: let the Lord God be witness against you, the Lord from his holy Temple.

Leviticus 18:18

And you may not take as wife a woman and at the same time her sister, to be in competition with her in her life-time.

Malachi 2:14

But you say, For what reason? Because the Lord has been a witness between you and the wife of your early years, to whom you have been untrue, though she is your friend and the wife to whom you have given your word.

Malachi 3:5

And I will come near to you for judging; I will quickly be a witness against the wonder-workers, against those who have been untrue in married life, against those who take false oaths; against those who keep back from the servant his payment, and who are hard on the widow and the child without a father, who do not give his rights to the man from a strange country, and have no fear of me, says the Lord of armies.

Matthew 19:5-6

For this cause will a man go away from his father and mother, and be joined to his wife; and the two will become one flesh?

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,

Treasury of Scripture Knowledge

Summary

If thou shalt afflict my daughters, or if thou shalt take other wives beside my daughters, no man is with us; see, God is witness betwixt me and thee.

Bible References

Afflict

Leviticus 18:18
And you may not take as wife a woman and at the same time her sister, to be in competition with her in her life-time.
Matthew 19:5
For this cause will a man go away from his father and mother, and be joined to his wife; and the two will become one flesh?

God

Judges 11:10
And the responsible men of Gilead said to Jephthah, May the Lord be our witness: we will certainly do as you say.
1 Samuel 12:5
Then he said, The Lord is witness against you, and the man on whom he has put the holy oil is witness this day that you have seen no wrong in me. And they said, He is witness.
Jeremiah 29:23
Because they have done shame in Israel, and have taken their neighbours' wives, and in my name have said false words, which I did not give them orders to say; and I myself am the witness, says the Lord.
Jeremiah 42:5
Then they said to Jeremiah, May the Lord be a true witness against us in good faith, if we do not do everything which the Lord your God sends you to say to us.
Micah 1:2
Give ear, you peoples, all of you; give attention, O earth and everything in it: let the Lord God be witness against you, the Lord from his holy Temple.
Malachi 2:14
But you say, For what reason? Because the Lord has been a witness between you and the wife of your early years, to whom you have been untrue, though she is your friend and the wife to whom you have given your word.
Malachi 3:5
And I will come near to you for judging; I will quickly be a witness against the wonder-workers, against those who have been untrue in married life, against those who take false oaths; against those who keep back from the servant his payment, and who are hard on the widow and the child without a father, who do not give his rights to the man from a strange country, and have no fear of me, says the Lord of armies.
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,

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