Genesis 31:52

This heap be witness, and this 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.

This heap be witness. Objects of nature were frequently thus spoken of. But over and above, there was a solemn appeal to God; and it is observable that there was a marked difference in the religious sentiments of the two. Laban spoke of the God of Abraham and Nahor, their common ancestors; but Jacob, knowing that idolatry had crept in among that branch of the family, swore by the Fear (God) of Isaac. It is thought by many that Laban comprehended, under the peculiar phraseology that he employed, all the objects of worship in Terah's family, in Mesopotamia; and in that view we can discern a very intelligible reason for Jacob's omission of the name of Abraham, and swearing only by "the Fear of his father Isaac," who had never acknowledged any deity but "the Lord." They who have one God should have one heart; they who are agreed in religion should endeavour to agree in everything else.