Genesis 31:43-32:3
Then Laban spoke up and said to Jacob, "The daughters are my daughters, the children are my children, and the flocks are my flocks; all that you see is mine. Yet what can I do now about my daughters or the children they have borne? Come, then, let us make a pact, you and I, that there may be a witness between you and me." Thereupon Jacob took a stone and set it up as a pillar.
And Jacob said to his kinsmen, "Gather stones." So they took stones and made a mound; and they partook of a meal there by the mound. Laban named it Yegar-sahadutha, but Jacob named it Gal-ed. And Laban declared, "This mound is a witness between you and me this day." That is why it was named Gal-ed; And [it was called] Mizpah, because he said, "May the Lord watch between you and me, when we are out of sight of each other. If you ill-treat my daughters or take other wives besides my daughters--though no one else be about, remember, God Himself will be witness between you and me."
And Laban said to Jacob, "Here is this mound and here the pillar which I have set up between you and me: this mound shall be witness and this pillar shall be witness that I am not to cross to you past this mound, and that you are not to cross to me past this mound and this pillar, with hostile intent. May the God of Abraham and the god of Nahor"--their ancestral deities--"judge between us." And Jacob swore by the Fear of his father Isaac. Jacob then offered up a sacrifice on the Height, and invited his kinsmen to partake of the meal. After the meal, they spent the night on the Height.
Early in the morning, Laban kissed his sons and daughters and bade them good-by; then Laban left on his journey homeward. Jacob went on his way, and angels of God encountered him. When he saw them, Jacob said, "This is God's camp." So he named that place Mahanaim.