" Grace is part of the very nature of God, and He cannot change. He is indeed the generous landowner of the parable in Matthew 20:1-16, continually going to the marketplace of life to find those in need of a day's wages so He can bring them into His vineyard and then reward them out of all proportion to their labors. "

― Jerry Bridges , Holiness Day by Day: Transformational Thoughts for Your Spiritual Journey