If one stopped with verse 19, one would have a solid case for asserting that unless a church is preaching to the unconverted, one is not really preaching the gospel as Christ intended. Making disciples and baptizing certainly refer to conversions from the world into Christianity. But Christ also says, ". . . teaching them to observe all things I have commanded you." Teaching the fullness of God's way of life cannot be done before baptism and the receipt of the Holy Spirit.

If that is not so, why did Christ inspire the writers of the New Testament to discuss refinements to basic truths and deeper knowledge and understanding with already converted people? Why all the admonitions to grow and to overcome our sins? Why does Paul say, "Leaving the discussion of the elementary principles of Christ, let us go on to perfection" (Hebrews 6:1)? Why does he later say in the same book, "not forsaking the assembling of ourselves together, as is the manner of some, but exhorting one another, and so much the more as you see the Day approaching" (Hebrews 10:25)? Why all the encouragement to hope in God and His promises? Why all the strong correction?