If only we were happy in Him, we would work much better for Him. It is joy in Christ that gives victory over the world. Why are we often in subjection to the world? Just because we have not found in Christ all the joy we ought to find. If I rightly use the grace of God, it will purify me. As Titus says, "The grace of God... hath appeared to all men, teaching us that, denying ungodliness and worldly lusts, we should live soberly, righteously, and godly, in this present world." God links my redemption with my purification.