And the LORD said to Abraham, "Why did Sarah laugh, saying, 'Shall I indeed bear a child, when I am so old?' Is anything too difficult for the LORD? At the appointed time I will return to you, at this time next year, and Sarah will have a son." (Genesis 18:13-14 NASB)
"Faith looks beyond all the contrary circumstances to rest upon the character of the one who promised. Do not be misled by the popular delusion that faith stands by itself, that it is simply believing—anything! Faith must have a promise to rest upon. Anything else is presumption, gullibility, and folly. But when God has given a word, it is the Word of God, and it can be trusted, despite circumstance, feelings, or anything else. For is anything too difficult for the Lord?
"Does it seem hard to you to be what God wants you to be? Is it hard to keep your evil nature in the place of death? It is not too hard for the Lord! Does it seem hard to you to be made sweet and gracious and forgiving and loving when down inside you know how nasty and devious and unpleasant and perverse you can be? It is hard for you, but it is not too hard for the Lord! Does it seem hard that the friend for whom you are praying should ever be converted, or the one that is now rebelling against grace can ever be changed? Is anything too hard for the Lord? Does some task that God is now asking of you seem impossible to perform? It may be hard for you, but it is not too hard for the Lord."
Taken from The Power of His Presence: a year of devotions from the writings of Ray Stedman, ©2007 by Elaine Stedman.