New Revised Standard Version
The sons of Abraham: Isaac and Ishmael.

Contemporary English Version
Abraham was the father of Isaac and Ishmael.

New American Bible
The sons of Abraham were Isaac and Ishmael.

Douay-Rheims Bible
And the sons of Abraham, Isaac and Ismahel.

And the sons of Abraham, Isaac and Ismahel.

Isaac.

Genesis 17:19-21 And God said to Abraham: Sara thy wife shall bear thee a son, and thou shalt call his name Isaac, and I will establish my covenant with him for a perpetual covenant, and with his seed after him. . . .

Genesis 21:2-5,12 And she conceived and bore a son in her old age, at the time that God had foretold her. . . .

Ishmael.

Genesis 16:11-16 And again: Behold, said he, thou art with child, and thou shalt bring forth a son: and thou shalt call his name Ismael, because the Lord hath heard thy affliction. . . .

Genesis 21:9,10 And when Sara had seen the son of Agar, the Egyptian, playing with Isaac, her son, she said to Abraham: . . .