Genesis 31:50

If you shall not afflict my daughters, or if you shall take wives besides my daughters, no man is with us. See! God is witness between you and me.

Jeremiah 42:5

And they said to Jeremiah, Let Jehovah be a true and faithful witness between us if we do not do even according to all things for which Jehovah your God shall send you to us.

Jeremiah 29:23

because they have committed evil in Israel, and have committed adultery with their neighbors' wives, and have spoken lying words in My name, which I have not commanded them; for I am He who knows and a witness, says Jehovah.

Judges 11:10

And the elders of Gilead said to Jephthah, Jehovah is witness between us if we do not do so according to your word.

1 Samuel 12:5

And he said to them, Jehovah is witness against you, and His anointed is witness this day, that you have not found anything in my hand. And they answered, He is witness.

Micah 1:2

Hear, all you people; listen, O earth, and its fullness. And let the Lord Jehovah be witness against you, the Lord from His holy temple.

Leviticus 18:18

And you shall not take a wife to her sister, to vex her, to uncover her nakedness, beside the other in her life.

Malachi 2:14

Yet you say, Why? Because Jehovah has been witness between you and the wife of your youth, against whom you have dealt treacherously; yet she is your companion and your covenant wife.

Malachi 3:5

And I will come near you to judgment. And I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those who extort from the hired laborer's wages, and turning away the widow, and the orphan, the alien, and not fearing Me, says Jehovah of Hosts.

Matthew 19:5-6

and said, For this cause a man shall leave father and mother and shall cling to his wife, and the two of them shall be one flesh?

1 Thessalonians 2:5

For neither at any time did we use flattering words, as you know, nor with pretense of covetousness; God is witness.

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 shall not take a wife to her sister, to vex her, to uncover her nakedness, beside the other in her life.
Matthew 19:5
and said, For this cause a man shall leave father and mother and shall cling to his wife, and the two of them shall be one flesh?

God

Judges 11:10
And the elders of Gilead said to Jephthah, Jehovah is witness between us if we do not do so according to your word.
1 Samuel 12:5
And he said to them, Jehovah is witness against you, and His anointed is witness this day, that you have not found anything in my hand. And they answered, He is witness.
Jeremiah 29:23
because they have committed evil in Israel, and have committed adultery with their neighbors' wives, and have spoken lying words in My name, which I have not commanded them; for I am He who knows and a witness, says Jehovah.
Jeremiah 42:5
And they said to Jeremiah, Let Jehovah be a true and faithful witness between us if we do not do even according to all things for which Jehovah your God shall send you to us.
Micah 1:2
Hear, all you people; listen, O earth, and its fullness. And let the Lord Jehovah be witness against you, the Lord from His holy temple.
Malachi 2:14
Yet you say, Why? Because Jehovah has been witness between you and the wife of your youth, against whom you have dealt treacherously; yet she is your companion and your covenant wife.
Malachi 3:5
And I will come near you to judgment. And I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those who extort from the hired laborer's wages, and turning away the widow, and the orphan, the alien, and not fearing Me, says Jehovah of Hosts.
1 Thessalonians 2:5
For neither at any time did we use flattering words, as you know, nor with pretense of covetousness; God is witness.