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22 Seeing ye have purified your souls, or, Purifying your souls. Erasmus badly renders the words, “Who have purified,” etc. For Peter does not declare what they had done, but reminds them of what they ought to do. The participle is indeed in the past tense, but it may be rendered as a gerund, “By purifying, etc.” The meaning is, that their souls would not be capable of receiving grace until they were purified, and by this our uncleanness is proved. ¹⁷¹⁷     It is better to keep the tense of the participle, — “Having purified (or, since ye have purified) your souls by obeying the truth through the Spirit to an unfeigned love of the brethren, love ye one another fervently from a pure heart; having been born again,” etc.
   The order here is similar to what is often found in Scripture; purification is mentioned before regeneration, as being the most visible and the effect; then what goes before it as being in a manner the cause. — Ed. But that he might not seem to ascribe to us the power of purifying our souls, he immediately adds, through the Spirit; as though he had said, “Your souls are to be purified, but as ye cannot do this, offer them to God, that he may take away your filth by his Spirit.” He only mentions souls, though they needed to be cleansed also from the defilements of the flesh, as Paul bids the Corinthians, (2 Corinthians 7:1;) but as the principal uncleanness is within, and necessarily draws with it that which is outward, Peter was satisfied with mentioning only the former, as though he had said, that not outward actions only ought to be corrected, but the very hearts ought to be thoroughly reformed.

He afterwards points out the manner, for purity of soul consists in obedience to God. Truth is to be taken for the rule which God prescribes to us in the Gospel. Nor does he speak only of works, but rather faith holds here the primacy. Hence Paul specially teaches us in the first and last chapter of the Epistle to the Romans, that faith is that by which we obey God; and Peter in Acts, the fifteenth chapter, bestows on it this eulogy, that God by it purifies the heart.

Unto love of the brethren, or, Unto brotherly love. He briefly reminds us what God especially requires in our life, and the mark to which all our endeavors should be directed. So Paul in the first chapter of the Epistle to the Ephesians, when speaking of the perfection of the faithful, makes it to consist in love. And this is what we ought the more carefully to notice, because the world makes its own sanctity to consist of the veriest trifles, and almost overlooks this the chief thing. We see how the Papists weary themselves beyond measure with thousand invented superstitions: in the meantime, the last thing is that love which God especially commends. This, then, is the reason why Peter calls our attention to it, when speaking of a life rightly formed.

He had before spoken of the mortification of the flesh, and of our conformity with the will of God; but he now reminds us of what God would have us to cultivate through life, that is, mutual love towards one another; for by that we testify also that we love God; and by this evidence God proves who they are who really love him.

He calls it unfeigned, (ἀνυπόκριτον), as Paul calls faith in 1 Timothy 1:5; for nothing is more difficult than to love our neighbors in sincerity. For the love of ourselves rules, which is full of hypocrisy; and besides, every one measures his love, which he shews to others, by his own advantage, and not by the rule of doing good. He adds, fervently; for the more slothful we are by nature, the more ought every one to stimulate himself to fervor and earnestness, and that not only once, but more and more daily.

23 Being born again Here is another reason for an exhortation, — that since they were new men and born again of God, it behoved them to form a life worthy of God and of their spiritual regeneration. And this seems to be connected with a verse in the next chapter respecting the milk of the word, which they were to seek, that their way of living might correspond with their birth. It may, however, be extended wider, so as to be connected also with what has gone before; for Peter collected together those things which may lead us to an upright and a holy life. The object, then, of Peter was to teach us that we cannot be Christians without regeneration; for the Gospel is not preached, that it may be only heard by us, but that it may, as a seed of immortal life, altogether reform our hearts. ¹⁸¹⁸     Most commentators, like Calvin, represent the seed as the word; but the construction does not admit this; the words are, “Having been begotten from a seed, not corruptible, but incorruptible, through the living word of God, and for-ever abiding.” The “seed” denotes evidently the vital principle of grace, the new nature, the restored image of God; it is the same with what John means when he says,
   “His seed (that is, of God) remaineth in him.” (1 John 3:9.)
   Then “the word” is set forth as the means or instrument by which this seed is implanted. The “living” here does not mean life-giving, as some interpret it, but stands opposed to what ceases to be valid: and “for-ever abiding” more fully expresses its meaning. The metaphor in the parable of the sower is quite different: the word there is compared to a seed sown on bad or good ground; but here the turning of a bad into a good ground is the subject; and in this process the word is employed as an instrument. — Ed. Moreover, the corruptible seed is set in opposition to God’s word, in order that the faithful might know that they ought to renounce their former nature, and that it might be more evident how much is the difference between the children of Adam who are born only into the world, and the children of God who are renewed into a heavenly life. But as the construction of the Greek text is doubtful, we may read, “the living word of God,” as well as, “the word of the living God.” As, however, the latter reading is less forced, I prefer it; though it must be observed, that the term is applied to God owing to the character of the passage. For, as in Hebrews 4:12, because God sees all things, and nothing is hid from him, the apostle argues that the word of God penetrates into the inmost marrow, so as to discern thoughts and feelings; so, when Peter in this place calls him the living God, who abides for ever, he refers to the word, in which the perpetuity of God shines forth as in a living mirror.