Now we, brothers, are children belonging to the promise the same as Isaac was.

14. Why was Isaac’s birth “in the manner of spirit”?

¹⁴ The Galatian Christians thus addressed were “God’s children as a result of his promise.” (Galatians 4:28, Today’s English Version) Foreshadowing this, Isaac was born to the centenarian Abraham and his 90-year-old wife Sarah in fulfillment of Jehovah’s promise to that faithful patriarch.

It is noteworthy that the “promise” itself was not old when Isaac was born in 1918 B.C.E., for that was only 25 years after Abraham’s entry into the promised land of Canaan in 1943 B.C.E., when the “promise” went into effect.