Genesis 31:44

“Now therefore, come thou, let us make a covenant, I and thou, etc.] Let us be good friends, and enter into an alliance for mutual safety, and make an agreement for each other’s good. Laban perceiving that Jacob’s God was with him, and blessed him, and made him prosperous, and protected him, was fearful, lest, growing powerful, he should some time or other revenge himself on him or his, for his ill usage of him; and therefore was desirous of entering into a covenant of friendship with him: and let it be for a witness between me and thee; that all past differences are made up, and former quarrels subside, and everything before amiss is forgiven and forgotten, and that for the future peace and…”

“Come thou, let us make a covenant--The way in which this covenant was ratified was by a heap of stones being laid in a circular pile, to serve as seats, and in the center of this circle a large one was set up perpendicularly for an altar. It is probable that a sacrifice was first offered, and then that the feast of reconciliation was partaken of by both parties seated on the stones around it. To this day heaps of stones, which have been used as memorials, are found abundantly in the region where this transaction took place.”