Genesi 17:2

And I will make my covenant between me and thee, and will multiply thee exceedingly.

Ver. 2. And I will make my covenant.] This is now the fifth confirmation of the Covenant; which shows that it is the alpha and omega, the first, second, and third of our salvation; and it is fit we should be well studied in it, and assured of our interest. For as the mercy seat was no larger than the ark, Exo 25:10-17 so neither is the grace of God than the covenant. And as the ark and mercy seat were never separated; so neither is his mercy from his people.