Maturing in Faith

Therefore Sarah laughed within herself, saying, “After I have grown old, shall I have pleasure, my lord being old also?”
And the Lord said to Abraham, “Why did Sarah laugh, saying, ‘Shall I surely bear a child, since I am old?’ Is anything too hard for the Lord? At the appointed time I will return to you, according to the time of life, and Sarah shall have a son.” -Genesis 18:12-14.