Hebrews 6:13

Heb. 6:13. For when God made promise to Abraham, because he could swear by no greater, he sware by himself.

This verse shows the profound significance of God's covenant-binding of Himself in the sermon on God's sovereignty.

4. Hence we learn what cause we have to admire the grace of God, that he should condescend to become bound to us by covenant; that he, who is naturally supreme in his dominion over us, who is our absolute proprietor, and may do with us as he pleases, and is under no obligation to us; that he should, as it were, relinquish his absolute freedom, and should cease to be merely sovereign in his dispensations towards believers, when once they have believed in Christ, and should, for their more abundant consolation, become bound. So that they can challenge salvation of this Sovereign; they can demand it through Christ, as a debt. And it would be prejudicial to the glory of God's attributes to deny it to them; it would be contrary to his justice and faithfulness. What wonderful condescension is it in such a Being, thus to become bound to us worms of the dust, for our consolation! He bound himself by his word, his promise. But he was not satisfied with that; but that we might have stronger consolation still, he hath bound himself by his oath. Hebrews 6:13 etc., "For when God made promise to Abraham, because he could swear by no greater, he sware by himself; saying, Surely blessing I will bless thee, and multiplying I will multiply thee. And so, after he had patiently endured, he obtained the promise. For men verily swear by the greater; and an oath for confirmation is to them an end of all strife. Wherein God, willing more abundantly to show unto the heirs of promise the immutability of his counsel, confirmed it by an oath; that by two immutable things, in which it was impossible for God to lie we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us. Which hope we have as an anchor of the soul, both sure and steadfast, and which entereth into that within the vail; whither the forerunner is for us entered, even Jesus, made a high priest forever after the order of Melchisedec."