Genesis 31:50–53

If you oppress my daughters, or if you take wives besides my daughters, although no one is with us, see, God is witness between you and me.”

Then Laban said to Jacob, “See this heap and the pillar, which I have set between you and me. This heap is a witness, and the pillar is a witness, that I will not pass over this heap to you, and you will not pass over this heap and this pillar to me, to do harm. The God of Abraham and the God of Nahor, the God of their father, judge between us.” So Jacob swore by the Fear of his father Isaac,

If you mistreat my daughters or if you take any wives besides my daughters, even though no one is with us, remember that God is a witness between you and me.”

Laban also said to Jacob, “Here is this heap, and here is this pillar I have set up between you and me. This heap is a witness, and this pillar is a witness, that I will not go past this heap to your side to harm you and that you will not go past this heap and pillar to my side to harm me. May the God of Abraham and the God of Nahor, the God of their father, judge between us.”

So Jacob took an oath in the name of the Fear of his father Isaac.

If you mistreat my daughters or take other wives, though no one is with us, understand that God will be a witness between you and me.” Laban also said to Jacob, “Look at this mound and the marker I have set up between you and me. This mound is a witness and the marker is a witness that I will not pass beyond this mound to you, and you will not pass beyond this mound and this marker to do me harm. The God of Abraham, and the gods of Nahor—the gods of their father—will judge between us.” And Jacob swore by the Fear of his father Isaac.

If you mistreat my daughters or if you marry other wives, God will see it even if no one else does. He is a witness to this covenant between us.

“See this pile of stones,” Laban continued, “and see this monument I have set between us. They stand between us as witnesses of our vows. I will never pass this pile of stones to harm you, and you must never pass these stones or this monument to harm me. I call on the God of our ancestors—the God of your grandfather Abraham and the God of my grandfather Nahor—to serve as a judge between us.”

So Jacob took an oath before the fearsome God of his father, Isaac, to respect the boundary line.

If you mistreat my daughters, and if you take wives besides my daughters, when there is no man with us, see—God is a witness between me and you.” And Laban said to Jacob, “See, this pile of stones, and see the pillar that I have set up between me and you. This pile of stones is a witness, and the pillar is a witness, that I will not pass beyond this pile of stones to you, and that you will not pass beyond this pile of stones and this pillar to me intending harm. May the God of Abraham and the God of Nahor, the God of their father judge between us.” Then Jacob swore by the Fear of his father Isaac.

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. And Laban said to Jacob, Behold this heap, and behold this pillar, which I have cast betwixt me and thee; This heap be witness, and this pillar be witness, that I will not pass over this heap to thee, and that thou shalt not pass over this heap and this pillar unto me, for harm. The God of Abraham, and the God of Nahor, the God of their father, judge betwixt us. And Jacob sware by the fear of his father Isaac.