“Abraham circumcised his son, Isaac, when he was eight days old, as God had commanded him.”
Genesis 21:4 (WEB)
Context Reading
2Sarah conceived, and bore Abraham a son in his old age, at the set time of which God had spoken to him. 3Abraham called his son who was born to him, whom Sarah bore to him, Isaac. 4Abraham circumcised his son, Isaac, when he was eight days old, as God had commanded him. 5Abraham was one hundred years old when his son, Isaac, was born to him. 6Sarah said, “God has made me laugh. Everyone who hears will laugh with me.”