Abraham bowed down with his face to the ground. But inside he was laughing, asking himself, “How on earth could I have a son at the age of one hundred? How could Sarah have a child when she is ninety?”
The officer who was the king's assistant said to the man of God, “Look, even if the Lord opened windows in heaven what you say couldn't happen!” Elisha replied, “You'll see it with your own eyes, but you won't get to eat any of it.”
His trust in God didn't weaken even though he thought his body was practically dead (he was around a hundred years old), and knew that Sarah was too old to have children.