This mound is a witness, and this pillar is a witness, that I will not go past this mound to harm you, and you will not go past this mound and pillar to harm me.
Jewish Publication Society of America Version (JPS1917) - Genesis 31:52 >This heap be witness, and the pillar be witness, that I will not pass over this heap to thee, and that thou shalt not pass over this heap and this pillar unto me, for harm.