Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently:
Purified [ heegnikotes (G48 ): made chaste] ... in obeying the truth - `in your (the) obedience of (i:e., to) the truth' (the Gospel way of salvation); i:e., in your believing. Faith purifies the heart by implanting the only pure motive, love to God (Acts 15:9; Romans 1:5).
Through the Spirit. Omitted in 'Aleph (') A B C. The Holy Spirit bestows the obedience of faith (1 Peter 1:2; 1 Corinthians 12:3).
Unto - with a view to: the proper result of faith. 'For what end must we lead a pure life? That we may thereby be saved? No: but that we may serve our neighbour' (Luther).
Unfeigned - (1 Peter 2:1-2.)
Love of the brethren - i:e., Christians; distinct from common love. 'The Christian loves primarily those in Christ; secondarily, all who might be in Christ-namely, all men, as Christ died for all, and as he hopes that they, too, may become Christian brethren' (Steiger). Bengel: here, as in 2 Peter 1:5; 2 Peter 1:7, 'brotherly love' is preceded by the purifying graces, "faith, knowledge, godliness," etc. Love to the brethren evidences our regeneration and justification.
Love one another. When the purifying by faith into love of the brethren has formed the habit, the act follows, so that "love" is at once habit and act.
With a pure heart. So 'Aleph ('). But A B read, '(love) from the heart.' Fervently, х ektenoos (G1619)] - 'intensely:' with all powers on the stretch (1 Peter 4:8; Acts 26:7).