1 John 2:12-17
12 I write unto you, little children, because your sins are forgiven you for his name's sake.
13 I write unto you, fathers, because ye have known him that is from the beginning. I write unto you, young men, because ye have overcome the wicked one. I write unto you, little children, because ye have known the Father.
14 I have written unto you, fathers, because ye have known him that is from the beginning. I have written unto you, young men, because ye are strong, and the word of God abideth in you, and ye have overcome the wicked one.
15 Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him.
16 For all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world.
17 And the world passeth away, and the lust thereof: but he that doeth the will of God abideth for ever.
1 John 2:12
I have written to you, beloved children - Thus St. John bespeaks all to whom he writes. But in 1Jn 2:13-27, he divides them particularly into "fathers," "young men," and "little children." Because your sins are forgiven you - As if he had said, This is the sum of what I have now written. He then proceeds to other things, which are built upon this foundation.
1 John 2:13
The address to spiritual fathers, young men, and little children is first proposed in this verse, wherein he says, I write to you, fathers: I write to you, young men: I write to you, little children: and then enlarged upon; in doing which he says, "I have written to you, fathers," 1Jn 2:14. "I have written to you, young men," 1Jn 2:14-17. "I have written to you, little children," 1Jn 2:18-27. Having finished his address to each, he returns to all together, whom he again terms, (as 1Jn 2:12,) "beloved children." Fathers, ye have known him that is from the beginning - We have known the eternal God, in a manner wherein no other, even true believers, know him. Young men, ye have overcome the wicked one - In many battles, by the power of faith. Little children, ye have known the Father - As your Father, though ye have not yet overcome, by the Spirit witnessing with your Spirit, that ye are the children of God."
1 John 2:14
I have written to you, fathers - As if he had said, Observe well what I but now wrote. He speaks very briefly and modestly to these, who needed not much to be said to them, as having that deep acquaintance with God which comprises all necessary knowledge. Young men, ye are strong - In faith. And the word of God abideth in you - Deeply rooted in your hearts, whereby ye have often foiled your great adversary.
1 John 2:15
To you all, whether fathers, young men, or little children, I say, Love not the world - Pursue your victory by overcoming the world. If any man love the world - Seek happiness in visible things, he does not love God.
1 John 2:16
The desire of the flesh - Of the pleasure of the outward senses, whether of the taste, smell, or touch. The desire of the eye - Of the pleasures of imagination, to which the eye chiefly is subservient; of that internal sense whereby we relish whatever is grand, new, or beautiful. The pride of life - All that pomp in clothes, houses, furniture, equipage, manner of living, which generally procure honour from the bulk of mankind, and so gratify pride and vanity. It therefore directly includes the desire of praise, and, remotely, covetousness. All these desires are not from God, but from the prince of this world.
1 John 2:17
The world passeth away, and the desire thereof - That is, all that can gratify those desires passeth away with it. But he that doeth the will of God - That loves God, not the world. Abideth - In the enjoyment of what he loves, for ever.