1 Peter 1:22,23 - Joseph Benson’s Commentary on the Old and New Testaments

Seeing you have purified your souls By applying to this fountain which God has opened for sin and for uncleanness, and by believing and obeying the truth, which God hath appointed to be the grand means of sanctification, delivering such as obey it from the power, and purifying them from the defilement of sin, John 8:32; John 17:17; through the Spirit working by the word, unto the unfeigned love of the brethren For the fruit of the Spirit is love to the children of God, as well as to God their heavenly Father. See that ye love one another with a pure heart A heart purified from all earthly and sensual affections, and corrupt passions; from all selfish, interested views, designs, and desires; and that fervently as Christ loved the church; and so as to be willing, if called to it, to lay down your lives for the brethren, 1 John 4:16. Peter's description of Christian love here is excellent; it springs up in a heart purified by the truth of God, through the influence of his Spirit. It is sincere in its operation, it is unmixed with carnal passions, and it is fervent and increasing. Being born again Born from above, born of the Spirit of God, and therefore his genuine children; a consideration which lays you under an indispensable obligation to love all your brethren and sisters in Christ, who are born of the same Spirit. See the note on John 3:3. Not of corruptible seed Not by virtue of any descent from human parents; but of incorruptible Namely, the truth of God, rendered effectual through his grace; which liveth Is full of divine virtue and vital energy; and abideth for ever Produces effects which will continue for ever, or begets in us that spiritual life which will issue in life eternal.