2 Chorinthians 6:1 Working together with him, then, we appeal to you not to receive the grace of God in vain. For he says, “In a favorable time I listened to you, and in a day of salvation I have helped you.” Behold, now is the favorable time; behold, now is the day of salvation.
Matthew 23:37 “O Jerusalem, Jerusalem, the city that kills the prophets and stones those who are sent to it! How often would I have gathered your children together as a hen gathers her brood under her wings, and you were not willing!
Hebrews 12:25 See that you do not refuse him who is speaking. For if they did not escape when they refused him who warned them on earth, much less will we escape if we reject him who warns from heaven.
God wants us to be workers together with Him, not “couch potatoes” or “pew potatoes” together with Him. Instead of trying to get God to help us with our work, we need to find out what God’s work is, ask Him to help us carry it out, and do it with Him. What does it mean to receive the grace of God in vain? It means to receive the goodness and favor of God, yet to hinder the work of grace in one’s life. It means to receive the favor of God and to fail in what Paul spoke of in 1 Corinthians 15:10: But by the grace of God I am what I am, and His grace toward me was not in vain; but I labored more abundantly than they all, yet not I, but the grace of God which was with me.
Is God supposed to do it or am I supposed to do it? Many struggle with this. The answer is, “Yes!” God does it and we do it in obedience through Him. Trust God, rely on Him, and then get to work and work as hard as you can! That is how we see the work of God accomplished. If I neglect my end of the partnership, God’s grace doesn’t accomplish all that it might or could if I am an active, obedient, and willing worker, therefore the grace given to me is in vain. “God’s grace is always coming to my heart and life in the very wonderful and blessed experience of now. Yesterday’s grace is totally inadequate for the burden of today, and if I do not learn to lay hold of heavenly resources every day of my life for the little things as well as the big things, as a Christian I soon become stale, barren, and fruitless in the service of the Lord.” (Redpath)