If I know that my existence is the grace of God …
If we, as Christians, understand that our existence is by the grace of God, then we should labor diligently for the Lord and His Church by the power of His grace. We should strive even more than those who do not realize this grace. If we merely say, 'It is God's grace,' with our words but do not labor with our actions, we are making that grace void (1 Cor. 15:10).