Genesis 17:25
ESV
And Ishmael his son was thirteen years old when he was circumcised in the flesh of his foreskin.
NIV
and his son Ishmael was thirteen;
NASB
And his son Ishmael was thirteen years old when he was circumcised in the flesh of his foreskin.
CSB
and his son Ishmael was thirteen years old when the flesh of his foreskin was circumcised.
NLT
and Ishmael, his son, was thirteen.
KJV
And Ishmael his son was thirteen years old, when he was circumcised in the flesh of his foreskin.
NKJV
And Ishmael his son was thirteen years old when he was circumcised in the flesh of his foreskin.
What does Genesis 17:25 mean?
Ishmael, 13, was also circumcised on this momentous day in the life of Abraham and his household. God had made clear to Abraham that Ishmael, though he would be greatly blessed, would not be the child through whom the covenant promises would pass. Still, as a male living in Abraham's household, Ishmael must be circumcised along with all the other men and boys. God's prior instructions were very specific: those who were not circumcised could not be a part of the promised people (Genesis 17:14).Genesis 17:15–27 describes God's surprising revelation to the newly renamed, 99-year-old Abraham: His presumably barren, 89-year-old wife, Sarai, now to be named Sarah, would bear him a son within a year. Ishmael, now 13, would still be abundantly blessed, but this new son, Isaac, would be the one through whom God would keep His covenant promises. As soon as God left, Abraham immediately set about obeying God's command to circumcise himself and every male in his household as a sign of the covenant with the Lord.
God appears to Abram once more in Genesis 17, but this instance is very different from prior meetings. God reconfirms His promises to make Abram a father of nations and to give to him and his descendants the land of Canaan. This time, though, God changes Abram's name to Abraham and gives him a requirement to circumcise himself and every male in his household forever. He also changes Sarai's name to Sarah. God announces that Abraham and Sarah will have a son, after all. His 13-year old son Ishmael will be blessed, but this new son, Isaac, to be born within the year, will be the one to whom God's covenant promises will pass.