Is any thing too hard for the LORD? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son.
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Genesis 18:12-16
Tyndale Open Study Notes (CC BY-SA 4.0).
18:14 Is anything too hard for the Lord? The question is rhetorical. God is able to do marvelous things. Nothing is incredible to those in covenant fellowship with the Lord, because nothing is too difficult for him.
Other Bible passages linked to this one, most cited first.
For with God nothing shall be impossible.
But Jesus beheld them, and said unto them, With men this is impossible; but with God all things are possible.
And Jesus looking upon them saith, With men it is impossible, but not with God: for with God all things are possible.
Behold, I am the LORD, the God of all flesh: is there any thing too hard for me?
Now unto him that is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us,
I know that thou canst do every thing, and that no thought can be withholden from thee.
Authorship: the book itself or Christian tradition. Approximate dates, as in Carson and Moo, An Introduction to the New Testament, and Longman and Dillard, An Introduction to the Old Testament.