“Each time he said, “My grace is all you need. My power works best in weakness.”
(2 Corinthians 12:9, NLT)
The grace you had yesterday will not be sufficient for today. Grace is the overflowing favor of God, and you can always count on it being available to draw upon as needed. Prayer is the practice of drawing on the grace of God.
(from My Utmost For His Highest by Oswald Chambers)