God’s Death Oath Gen 15:7-19 with Heb 10:19-22 God justifies believing sinners and ratifies His promise by taking an oath unto death. 1. The God of promise helps our unbelief. (Genesis 15:7-11) 2. The God of promise prophesies our deliverance. (Genesis 15:12-16) 3. The God of promise ratifies His promise to us in the blood of the covenant. (Genesis 15:17-19; Hebrews 10:19-22).