Galatians 4:22
Scripture says that Abraham had two sons, one the child of the slave-woman and the other the child of the free woman.
Hebrews 11:11
Again, it was faith that enabled Sarah to conceive (though she was past the age for child-bearing), because she felt sure that he who had given her the promise would not fail her.
Acts 7:8
Then God made with Abraham the Covenant of Circumcision; and under it Abraham became the father of Isaac, and circumcised him when he was eight days old; and Isaac became the father of Jacob; and Jacob of the Twelve Patriarchs.
Luke 1:24-25
After this his wife, Elizabeth, expecting to become a mother, lived in seclusion for five months.
Luke 1:36
And Elizabeth, your cousin, is herself also expecting a son in her old age; and it is now the sixth month with her, though she is called barren;
Romans 9:9
For these words are the words of a promise-'About this time I will come, and Sarah shall have a son.'