Cross reference
Ruth 1:12
12 Turn again, my daughters, go your way; for I am too old to have a husband. If I should say, I have hope, if I should even have a husband tonight, and should also bear sons;
Genesis 17:17
17 Then Abraham fell on his face, and laughed, and said in his heart, "Will a child be born to him who is one hundred years old? Will Sarah, who is ninety years old, give birth?"
1 Timothy 5:9
9 Let no one be enrolled as a widow under sixty years old, having been the wife of one man,