Matthew 1:2
Abraham had a son named Isaac; Isaac had a son named Jacob and Jacob's sons were Judah and his [eleven] brothers.
Luke 3:34
who was the son of Jacob, who was the son of Isaac, who was the son of Abraham. [And Abraham] was the son of Terah, who was the son of Nahor,
Acts 7:8
And God gave Abraham the Agreement which required circumcision [as an identifying mark] so when Abraham fathered Isaac he circumcised him when he was eight days old. Then Isaac had a son, Jacob; and Jacob had [as sons] the twelve patriarchs [i.e., ruling fathers of families].
Romans 9:10-13
And that is not all, but Rebecca also conceived children by one man, our forefather Isaac.