But why does he say then, purify your souls? He is well aware that the desires of the flesh remain with us after baptism, even to the grave. Therefore it is not enough that a person should refrain from works and remain pure outwardly, while he permits evil lusts to cleave to his heart, but must thereafter beware that the soul be pure, as well as whatever proceeds out of the heart, and that the soul be opposed to these wicked lusts and desires, and continually contend therewith, until it is free from their power.
And here he adjoins an excellent provision: that we should purify our souls,6 through obedience to the truth in the Spirit. Much has been preached on chastity, and many books have been composed on the subject. They have said, we should fast for so long a time, we should not eat flesh, we should not drink wine, etc., that we may be free from temptation. These things may perhaps have aided somewhat to that end, but it has not been enough, it has not subdued lust.
So St. Jerome writes of himself, that he had mortified his body to such an extent that he had become like a Moor; still it had been of no avail, and he had dreamed of being at Rome at a revelry among harlots.
St. Bernard also subjected himself to such austerities, and so mortified his body that it became offensive, as I said above. They endured severe temptation, and purposed thus to subdue it by external methods. But since it is external, it is only an outward plaster, with no inward application. So that it does not suffice to subdue lust.
But here St. Peter has prescribed an appropriate remedy,—namely, obedience to truth in the Spirit, as Scripture also has done in other places,—as Isaiah xi.: "Faith shall be the girdle of his reins." This is the true plaster that girds the reins, for it must proceed from within outward, not from without inward. For it has penetrated into the flesh and blood, the marrow and other parts of the living system; it is not outward in the dress or clothing. Therefore it is not to be expected that we should subdue lust with outward things; we may weaken the body and destroy it with fastings and labors, but the evil lusts are not thereby banished; yet faith can subdue them, and guard them, that they shall be compelled to give the Spirit place.
So likewise speaks the prophet Zachariah, ix., of the wine which Christ has, whereby the pure grow, and of which he gives them to drink. Other wine usually invites to wicked lust, but this wine,—that is, the Gospel,—subdues it, and makes the heart chaste. This is what St. Peter speaks of when any one heartily embraces the truth, and is obedient to it in spirit. This is the true help and the most powerful remedy for it, since you will find none which can still all evil thoughts like it; for if this enters our hearts, evil inclinations quickly leave; let whoever will try it, he shall find it true, and whoever has tried it, knows it well; but the devil lets no one easily attain it, and comprehend the word of God so as to delight in it; for he well knows how powerful it is to subdue evil lusts and thoughts.
St. Peter, therefore, would here say, if you would remain chaste, then must you render obedience to the truth in the Spirit, that is,—we must not only read and hear the word of God, but apprehend it in our hearts. Therefore it is not enough that a man should preach or hear the Gospel once, but he must ever press after it and persevere; for such grace does the word possess, that the more we taste it the more delightful it is; although there is, throughout, one and the same doctrine of faith, yet it cannot be listened to too much where the heart is not wanton and untamed.
To unfeigned love of the brethren. To what end, then, are we to live a chastely holy life? In order that we may be saved thereby? No! but in order that we may be useful to our neighbor. What am I to do that I may restrain my sin? I am to have obedience to the truth in the Spirit. But why am I to restrain it? In order that I may be of service to others, for I must first control my body and the flesh by the Spirit, and thus I can afterward be of service to others.—It follows further:
And have fervent love toward one another out of pure hearts. The Apostles Peter and Paul distinguish brotherly love, and love in general, from one another. Brotherhood is, that Christians should dwell altogether as brethren, and make no distinctions between themselves. For since we all have a common Christ, one baptism, one faith, one treasure, I am no better than thou; that which thou hast, I have also, and I am just as rich as thou. The treasure is the same, except that I may have it in a better shape than thou, since I may have it lying in gold, but thou in a poor garment. Therefore as we have the grace of Christ and all spiritual blessings in common, so should we also hold body and life, property and honor, in common, that one should be of service to another in all things.
Here he speaks plainly: in unfeigned brotherly love. The Apostles love to make use of the word, but have clearly perceived that were we called Christians and brethren universally one with another, it would be false, a feigned or imagined thing, and would be only hypocrisy. We have many brotherhoods set up in the world, but they are vain deceptions and corruptions, which the devil has devised and brought into the world, which are only antagonist to the true faith and to genuine brotherly love. Christ is mine as well as St. Bernard's; thine as well as St. Francis'; if one therefore should come to you and say, I shall go to heaven if I belong to this or that brotherhood, then tell him that he is deceived; for Christ cannot suffer, and will not allow any other than the common brotherhood, which we all have one with another; yet you come here, you fool, and will set up one of your own. This I will readily permit, that they be set up, not to help the soul, but as some one's endowment, and thus serve as a fund from which they who need shall be helped.
Thus we all of us, as Christians, have attained a brotherhood in baptism, whereof no saint possesses more than I or you. For just as costly as that one was purchased, at the same price was I also purchased. God has devoted as much toward me as to the greatest saint, except that he may have employed the treasure better, and may have a stronger faith than I.
But love is greater than brotherhood, for it extends even to our enemies, and especially to those who are not worthy of love. For as faith performs its work where it sees nothing, so also should love see nothing, and there especially exercise its office where there appears nothing lovely, but only disaffection and hostility. Where there is nothing that pleases me I should the more seek to be pleased. And this spirit should go forth fervently, says St. Peter, from the whole heart, just as God loved us when we were not worthy of love.—Now follows further:
As those who have been born again. Again we should do this, because we are not what we were before (he says), but have become new creatures. This has not come to pass through works, but is a consequence of the new birth. For thou canst not make the new man, but he must grow, or be born; as a husbandman cannot make a tree, but it must grow, itself, out of the earth, and as we certainly do not become the children of Adam, except as we are born and derive sin from our parents. So here it cannot come to pass through works that we should become the children of God, but we must also experience the new birth. This, therefore, is what the Apostle would say: since ye then have become new creatures, ye should conduct yourselves otherwise than ye did, and lead a new life. As ye before lived in hate, ye are now to walk in love—in all respects the reverse. But how has the new birth taken place? This, also, follows:
V. 23. Not of corruptible, but of incorruptible seed, even of the living word of God which endures for ever. Through a seed are we born again, for nothing grows as we see otherwise than through seed. Did the old birth spring from a seed? then must the new birth also spring from a seed. But what is this seed? Not flesh and blood! What then? It is not corruptible, but an eternal word. It is, moreover, that whereon we live,—food and nourishment. But especially is it the seed whereby we are born again, as he here says.
But how does this take place? After this manner: God lets the word—the Gospel—go forth, and the seed falls in the hearts of men, and wherever it fastens