'He began to do and teach,' not in the sense that any should come after Him and do, as the disciples of most great discoverers and thinkers have had to do: namely, systematise, rectify, and complete the first glimpses of truth which the master had given. 'He began to do and teach,' not in the sense that after He had 'passed into the heavens' any new truth or force can for evermore be imparted to humanity in regard of the subjects which He taught and the energies which He brought. But whilst thus His work is complete, His earthly work is also initial. And we must remember that whatever distinction my text may mean to draw between the work of Christ in the past and that in the present and the future, it does not mean to imply that when He 'ascended up on high' He had not completed the task for which He came, or that the world had to wait for anything more, either from Him or from others, to eke out the imperfections of His doctrine or the insufficiencies of His work. Let us ever remember that the initial work of Christ on earth is complete in so far as the revelation of God to men is concerned. There will be no other. There is needed no other. Nothing more is possible than what He, by His words and by His life, by His gentleness and His grace, by His patience and His Passion, has unveiled to all men, of the heart and character of God. The revelation is complete, and he that professes to add anything to, or to substitute anything for, the finished teaching of Jesus Christ concerning God, and man's relation to God, and man's duty, destiny, and hopes, is a false teacher, and to follow him is fatal. All that ever come after Him and say, 'Here is something that Christ has not told you,' are thieves and robbers, 'and the sheep will not hear them.' In like manner that work of Christ, which in some sense is initial, is complete as Redemption. 'This Man has offered up one sacrifice for sins for ever.' And nothing more can He do than He has done; and nothing more can any man or all men do than was accomplished on the Cross of Calvary as giving a revelation, as effecting a redemption, as lodging in the heart of humanity, and in the midst of the stream of human history, a purifying energy, sufficient to cleanse the whole black stream. The past work which culminated on the Cross, and was sealed as adequate and accepted of God in the Resurrection and Ascension, needs no supplement, and can have no continuation, world without end. And so, whatever may be the meaning of that singular phrase, 'began to do and teach,' it does not, in the smallest degree, conflict with the assurance that He hath ascended up on high, 'having obtained eternal redemption for us,' and 'having finished the work which the Father gave Him to do.' II. But then, secondly, we have to notice what Christ continues to do and to teach after His Ascension.