Abraham fell facedown. Then he laughed and said to himself, "Can a child be born to a man who is a hundred years old? Can Sarah give birth at the age of ninety?"

Luke 1:18
"How can I be sure of this?" Zechariah asked the angel. "I am an old man, and my wife is well along in years."

Romans 4:19
Without weakening in his faith, he acknowledged the decrepitness of his body (since he was about a hundred years old) and the lifelessness of Sarah's womb.

Genesis 17:3
Then Abram fell facedown, and God said to him,

Genesis 17:18
And Abraham said to God, "O that Ishmael might live under Your blessing!"

Genesis 18:11
And Abraham and Sarah were already old and well along in years; Sarah had passed the age of childbearing.

Genesis 18:12
So she laughed to herself, saying, "After I am worn out and my master is old, will I now have this pleasure?"

Genesis 21:5
Abraham was a hundred years old when his son Isaac was born to him.

Genesis 21:6
Then Sarah said, "God has made me laugh, and everyone who hears of this will laugh with me."

Genesis 21:7
She added, "Who would have told Abraham that Sarah would nurse children? Yet I have borne him a son in his old age."

Then Abraham fell on his face, and laughed, and said in his heart, Shall a child be born to him that is an hundred years old? and shall Sarah, that is ninety years old, bear?