Genesis 31:51-53

Expanded Bible

⁵¹ Here is the ·pile of rocks [mound; heap] that I have ·put [thrown up] between us and here is the ·rock I set up on end [pillar]. ⁵² This ·pile of rocks [mound; heap] and this ·rock set on end [pillar] will ·remind us of our agreement [^Lbe a witness]. I will never go past this ·pile [mound; heap] to hurt you, and you must never come to my side of them to hurt me. ⁵³ Let the God of Abraham, who is the God of Nahor and the God of their ·ancestors [fathers], ·punish either of us if we break this agreement [^Ljudge between us].”

So Jacob made a promise ·in the name of the God whom his father Isaac worshiped [^Lby the fear of his father Isaac].