John 1:29

By the word Lamb he alludes to the ancient sacrifices of the Law. He had to do with Jews who, having been accustomed to sacrifices, could not be instructed about atonement for sins in any other way than by holding out to them a sacrifice. As there were various kinds of them, he makes one, by a figure of speech, to stand for the whole; and it is probable that John alluded to the paschal lamb. It must be observed, in general, that John employed this mode of expression, which was better adapted to instruct the Jews, and possessed greater force; as in our own day, in consequence of baptism being generally practiced, we understand better what is meant by obtaining forgiveness of sins through the blood of Christ, when we are told that we are washed and cleansed by it from our pollutions. At the same time, as the Jews commonly held superstitious notions about sacrifices, he corrects this fault in passing, by reminding them of the object to which all the sacrifices were directed. It was a very wicked abuse of the institution of sacrifice, that they had their confidence fixed on the outward signs; and therefore John, holding out Christ, testifies that he is the Lamb of God; by which he means that all the sacrifices, which the Jews were accustomed to offer under the Law, had no power whatever to atone for sins, but that they were only figures, the truth of which was manifested in Christ himself.

Who taketh away the sin of the world. He uses the word sin in the singular number, for any kind of iniquity; as if he had said, that every kind of unrighteousness which alienates men from God is taken away by Christ. And when he says, the sin Of The World, he extends this favor indiscriminately to the whole human race; that the Jews might not think that he had been sent to them alone. But hence we infer that the whole world is involved in the same condemnation; and that as all men without exception are guilty of unrighteousness before God, they need to be reconciled to him. John the Baptist, therefore, by speaking generally of the sin of the world, intended to impress upon us the conviction of our own misery, and to exhort us to seek the remedy. Now our duty is, to embrace the benefit which is offered to all, that each of us may be convinced that there is nothing to hinder him from obtaining reconciliation in Christ, provided that he comes to him by the guidance of faith.

Besides, he lays down but one method of taking away sins We know that from the beginning of the world, when their own consciences held them convinced, men labored anxiously to procure forgiveness. Hence the vast number of propitiatory offerings, by which they falsely imagined that they appeased God. I own, indeed, that all the spurious rites of a propitiatory nature drew their existence from a holy origin, which was, that God had appointed the sacrifices which directed men to Christ; but yet every man contrived for himself his own method of appeasing God. But John leads us back to Christ alone, and informs us that there is no other way in which God is reconciled to us than through his agency, because he alone takes away sin. He therefore leaves no other refuge for sinners than to flee to Christ; by which he overturns all satisfactions, and purifications, and redemptions, that are invented by men; as, indeed, they are nothing else than base inventions framed by the subtlety of the devil.

The verb αἴρειν (to take away) may be explained in two ways; either that Christ took upon himself the load which weighed us down, as it is said that he carried our sins on the tree, (1 Peter 2:24;) and Isaiah says that

the chastisement of our peace was laid on him, (Isaiah 53:5;)

or that he blots out sins. But as the latter statement depends on the former, I gladly embrace both; namely, that Christ, by bearing our sins, takes them away. Although, therefore, sin continually dwells in us, yet there is none in the judgment of God, because when it has been annulled by the grace of Christ, it is not imputed to us. Nor do I dislike the remark of Chrysostom, that the verb in the present tense — ὁ αἴρων, who taketh away, denotes a continued act; for the satisfaction which Christ once made is always in full vigor. But he does not merely teach us that Christ takes away sin, but points out also the method, namely, that he hath reconciled the Father to us by means of his death; for this is what he means by the word Lamb. Let us therefore learn that we become reconciled to God by the grace of Christ, if we go straight to his death, and when we believe that he who was nailed to the cross is the only propitiatory sacrifice, by which all our guilt is removed.