Genesis 31:43-50

Then Laban replied to Jacob, “These women are my daughters, these children are my grandchildren, and these flocks are my flocks—in fact, everything you see is mine. But what can I do now about my daughters and their children? So come, let’s make a covenant, you and I, and it will be a witness to our commitment.” So Jacob took a stone and set it up as a monument. Then he told his family members, “Gather some stones.” So they gathered stones and piled them in a heap. Then Jacob and Laban sat down beside the pile of stones to eat a covenant meal. To commemorate the event, Laban called the place Jegar-sahadutha (which means “witness pile” in Aramaic), and Jacob called it Galeed (which means “witness pile” in Hebrew). Then Laban declared, “This pile of stones will stand as a witness to remind us of the covenant we have made today.” This explains why it was called Galeed—“Witness Pile.” But it was also called Mizpah (which means “watchtower”), for Laban said, “May the LORD keep watch between us to make sure that we keep this covenant when we are out of each other’s sight. 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.