Genesis 17:7Meaning & Commentary from the Church Fathers

By the alteration of letters inscribed upon the name of the patriarch itself, much like a pillar, God further communicates to the patriarch, "and I will establish my covenant between you and your offspring after you, for their generations, an everlasting covenant, that I may be your God." He emphasizes not only His devotion to the patriarch but also to his descendants beyond his lifetime. Observe how God uplifts the spirit of the righteous, assuring him of abundant provision for his offspring. What is the essence of this covenant? "I will be," He declares, "your God, and the God of your descendants after you." This will be the ultimate blessing for you and your descendants.

I will be your God and the God of your descendants after you. The significance of this covenant can be clearly understood due to its repetition three times during God's dialogue with Abraham (Gen. 17:7, 8, 19). It particularly emphasizes Isaac, especially in contrast to Ishmael, as the core and vital aspect of this promise. The tangible nature of this promise can be illustrated by comparing it to the practice of idolaters, who tend to claim their imagined deities as their own, worshiping the idols associated with their homes, cities, or nations, from whom they expect special favor. Laban serves as a perfect example of this (Genesis 31:30).

The renewed covenant established by God includes His commitment to be the God of Abraham and his descendants. This promise extends to Abraham's chosen offspring, specifically the Jews and Christians, whom He designates as His treasured possession, enjoying His unique favor and intimacy within the vast scope of His reign. This commitment will endure indefinitely—pertaining to the physical descendants of Abraham as long as the Old Testament Church and the Jewish nation continue to exist, while in regard to the spiritual heirs of Abraham—the Christians—it will last until the culmination of the age (Matthew 28:20).