We know some humble and sincere disciples will shrink back, saying, "We are not able," when we beg them to make Paul's language all their own. With their hands upon their mouths and their mouths in the dust, they dare not look up with perfect confidence; they think it almost presumption, or at least they say, despondingly, "It is not for me." "Paul," they say, "was an uncommon Christian--he attained a tall stature in holiness." So he did; and why? Because his was no half-way service; he gave no divided heart to his master. That was the reason why he so well understood the doctrine of full assurance. "If any man will do his will, he shall know of the doctrine." Do you understand these words of the Master? He does not say, "If any man fully keeps the law, which is the perfect will of the Father, he shall know of the doctrine," for it is not possible for any mere man perfectly to keep the commandments of God. Nor does he say, "If any man _does_ the will," but, "If any man _will_"--is willing to do his will. If he shows a willing heart and mind, God will enlighten him more and more. And what is implied in this willing heart and mind but full consecration? When shall we learn the secret of a happy life? "Ye cannot serve two masters." Those who give themselves up to Satan's service may lead an unhappy life, but greater must be the unhappiness of those who are trying to make a compromise between God and Satan. They can enjoy neither service; they are of all men most miserable. O ye who have professed the name of Christ, come away from all inferior pleasures! Pleasures? They are not worthy of the name. One hour with Christ is worth them all. Will you then suffer them to hide the Saviour from your view?