II. The Christian life is a continual feeding on a sacrifice.
‘Christ our Passover is sacrificed for us. Wherefore let us keep the feast.’ It is very remarkable that this is the only place in Paul's writings where he articulately pronounces that the Paschal Lamb is a type of Jesus Christ. There is only one other instance in the New Testament where that is stated with equal clearness and emphasis, and that is in John's account of the Crucifixion, where he recognises the fact that Christ died with limbs unbroken, as being a fulfilment, in the New Testament sense of that word, of what was enjoined in regard to the antitype, ‘a bone of him shall not be broken.’
But whilst the definite statement which precedes my text that Christ is ‘our Passover,’ and ‘sacrificed for us’ as such, is unique in Paul's writings, the thought to which it gives clear and crystallised expression runs through the whole of the New Testament. It underlies the Lord's Supper. Did you ever think of how great was the self-assertion of Jesus Christ when He laid His hand on that sacredest of Jewish rites, which had been established, as the words of the institution of it say, to be ‘a perpetual memorial through all generations,’ brushed it on one side, and in effect, said: ‘You do not need to remember the Passover any more. I am the true Paschal Lamb, whose blood sprinkled on the doorposts averts the sword of the destroying Angel, whose flesh, partaken of, gives immortal life. Remember Me, and this do in remembrance of Me.’ The Lord's Supper witnesses that Jesus thought Himself to be what Paul tells the Corinthians that He is, even our Passover, sacrificed for us. But the point to be observed is this, that just as in that ancient ritual, the lamb slain became the food of the Israelites, so with us the Christ who has died is to be the sustenance of our souls, and of our Christian life. ‘Therefore let us keep the feast.’
Feed upon Him; that is the essential central requirement for all Christian life, and what does feeding on Him mean? ‘How can this man give us his flesh to eat?’ said the Jews, and the answer is plain now, though so obscure then. The flesh which He gave for the life of the world in His death, must by us be taken for the very nourishment of our souls, by the simple act of faith in Him. That is the feeding which brings not only sustenance but life. Christ's death for us is the basis, but it is only the basis, of Christ's living in us, and His death for me is of no use at all to me unless He that died for me lives in me. We feed on Him by faith, which not only trusts to the Sacrifice as atoning for sin, but feeds on it as communicating and sustaining eternal life—‘Christ our Passover is sacrificed for us, wherefore let us keep the Feast.’
Again, we keep the feast when our minds feed upon Christ by contemplation of what He is, what He has done, what He is doing, what He will do; when we take Him as ‘the Master-light of all our seeing,’ and in Him, His words and works, His Passion, Resurrection, Ascension, Session as Sovereign at the right hand of God, find the perfect revelation of what God is, the perfect discovery of what man is, the perfect disclosure of what sin is, the perfect prophecy of what man may become, the Light of light, the answer to every question that our spirits can put about the loftiest verities of God and man, the universe and the future. We feed on Christ when, with lowly submission, we habitually subject thoughts, purposes, desires, to His authority, and when we let His will flow into, and make plastic and supple, our wills. We nourish our wills by submitting them to Jesus, and we feed on Him when we not only say ‘Lord! Lord!’ but when we do the things that He says. We feed on Christ, when we let His great, sacred, all-wise, all-giving, all satisfying love flow into our restless hearts and make them still, enter into our vagrant affections and fix them on Himself. Thus when mind and conscience and will and heart all turn to Jesus, and in Him find their sustenance, we shall be filled with the feast of fat things which He has prepared for all people. With that bread we shall be satisfied, and with it only, for the husks of the swine are no food for the Father's son, and we ‘spend our money for that which is not bread, and our labour for that which satisfieth not,’ if we look anywhere else than to the Paschal Lamb slain for us for the food of our souls.
III. The Christian life is a continual purging out of the old leaven.
I need not remind you how vivid and profoundly significant that emblem of leaven, as applied to all manner of evil, is. But let me remind you how, just as in the Jewish Ritual, the cleansing from all that was leavened was the essential pre-requisite to the participation in the feast, feeding on Jesus Christ, as I have tried to describe it, is absolutely impossible unless our leaven is cleansed away. Children spoil their appetites for wholesome food by eating sweetmeats. Men destroy their capacity for feeding on Christ by hungry desires, and gluttonous satisfying of those desires with the delusive sweets of this passing world. But, my brother, your experience, if you are a Christian man at all, will tell you that in the direct measure in which you have been drawn away into paltering with evil, your appetite for Christ and your capacity for gazing upon Him, contemplating Him, feeding on Him, has died out. There comes a kind of constriction in a man's throat when he is hungering after lesser good, especially when there is a tinge of evil in the supposed good that he is hungering after, which incapacitates Him from eating the bread of God, which is Jesus Christ.
But let us remember that absolute cleansing from all sin is not essential, in order to have real participation in Jesus Christ. The Jew had to take every scrap of leaven out of his house before he began the Passover. If that were the condition for us, alas! for us all; but the effort after purity, though it has not entirely attained its aim, is enough. Sin abhorred does not prevent a man from participating in the Bread that came down from heaven.
Then observe, too, that for this power to cleanse ourselves, we must have had some participation in Christ, by which there is given to us that new life that conquers evil. In the words immediately preceding my text, the Apostle bases his injunction to purge out the old leaven on the fact that ‘ye are unleavened.’ Ideally, in so far as the power possessed by them was concerned, these Corinthians were unleavened, even whilst they were bid to purge out the leaven. That is to say, be what you are; realise your ideal, utilise the power you possess, and since by your faith there has been given to you a new life that can conquer all corruption and sin, see that you use the life that is given. Purge out the old leaven because ye are unleavened.
One last word—this stringent exhortation, which makes Christian effort after absolute purity a Christian duty, and the condition of participation in the Paschal Lamb, is based upon that thought to which I have already referred, of the diabolical power of infection which Evil possesses. Either you must cast it out, or it will choke the better thing in you. It spreads and grows, and propagates itself, and works underground through and through the whole mass. A water-weed got into some of our canals years ago, and it has all but choked some of them. The slime on a pond spreads its green mantle over the whole surface with rapidity. If we do not eject Evil it will eject the good from us. Use the implanted power to cast out this creeping, advancing evil. Sometimes a wine-grower has gone into his cellars, and found in a cask no wine, but a monstrous fungus into which all the wine had, in the darkness, passed unnoticed. I fear some Christian people, though they do not know it, have something like that going on in them.