Matthew Poole and continuators on Genesis 22:16

16 And said, By my self have I sworn , saith the LORD, for because thou hast done this thing , and hast not with-held thy son, thine onely son;

So the Lord swears by his name, Ier. 44. 26. By his soul, in the Hebrew text, Ier. 51. 14. By his Holiness, Amos 4. 2. Which is the same with by himself, here. Hence also it appears that the Angel who speaks here is Christ and God, because this is Gods prerogative to swear by himself, as appears from Heb. 6. 13.

Not that Abraham by this act did properly merit or purchase the following promises, as plainly appears because the same things for substance had been freely promised to Abraham long before this time and action, Gen. 12. 2. and 13. 16. onely what before was promised is now confirmed by an Oath as a Testimony of that singular respect which God had to Abraham and to this heroical instance of Faith and Obedience.

Marginal references: Psal. 105. 9. Luk. 1. 73. Heb. 6. 13.