New Revised Standard Version
If you ill-treat my daughters, or if you take wives in addition to my daughters, though no one else is with us, remember that God is witness between you and me.”

Contemporary English Version
Then Laban said: If you mistreat my daughters or marry other women, I may not know about it, but remember, God is watching us!

New American Bible
If you mistreat my daughters, or take other wives besides my daughters, know that even though no one else is there, God will be a witness between you and me.”

Douay-Rheims Bible
If thou afflict my daughters, and if thou bring in other wives over them: none is witness of our speech but God, who is present and beholdeth.

If thou afflict my daughters, and if thou bring in other wives over them: none is witness of our speech but God, who is present and beholdeth.

afflict.

Leviticus 18:18 Thou shalt not take thy wife's sister for a harlot, to rival her: neither shalt thou discover her nakedness, while she is yet living.

Matthew 19:5,6 For this cause shall a man leave father and mother, and shall cleave to his wife, and they two shall be in one flesh. . . .

God.

Judges 11:10 They answered him: The Lord, who heareth these things, he himself is mediator and witness that we will do as we have promised.

1 Samuel 12:5 And he said to them: The Lord is witness against you, and his anointed is witness this day, that you have not found any thing in my hand. And they said: He is witness.

Jeremiah 29:23 Because they have acted folly in Israel, and have committed adultery with the wives of their friends, and have spoken lying words in my name, which I commanded them not: I am the judge and the witness, saith the Lord.

Jeremiah 42:5 And they said to Jeremiah: The Lord be witness between us of truth and faithfulness, if we do not according to every thing for which the Lord thy God shall send thee to us.

Micah 1:2 The word of the Lord, that came to Micah, the Morasthite, in the days of Joathan, Achaz, and Ezechias, kings of Juda: which he saw concerning Samaria and Jerusalem.

Malachi 2:14 And you have said: For what cause? Because the Lord hath been witness between thee, and the wife of thy youth, whom thou hast despised: yet she was thy partner, and the wife of thy covenant.

Malachi 3:5 And I will come to you in judgment, and will be a speedy witness against sorcerers, and adulterers, and false swearers, and them that oppress the hireling in his wages, the widows, and the fatherless: and oppress the stranger, and have not feared me, saith the Lord of hosts.

1 Thessalonians 2:5 For neither have we used at any time the speech of flattery, as you know: nor taken an occasion of covetousness (God is witness):