Genesis 31:46-52
46 He said to his relatives, “Gather some stones.” So they took stones and piled them in a heap, and they ate there by the heap.
47 Laban called it Jegar Sahadutha, and Jacob called it Galeed.
48 Laban said, “This heap is a witness between you and me today.” That is why it was called Galeed.
49 It was also called Mizpah, because he said, “May the Lord keep watch between you and me when we are away from each other.
50 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.”
51 Laban also said to Jacob, “Here is this heap, and here is this pillar I have set up between you and me.
52 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.