Jamieson, Fausset and Brown on 1 John 2:17

17. the world--with all who are of the world worldly.

passeth away--Greek, "is passing away" even now.

the lust thereof--in its threefold manifestation (1Jo 2:16).

he that doeth the will of God--not his own fleshly will, or the will of the world, but that of God (1Jo 2:3, 6), especially in respect to love.

abideth for ever--"even as God also abideth for ever" (with whom the godly is one; compare Psa 55:19, "God, even He that abideth of old): a true comment, which Cyprian and Lucifer have added to the text without support of Greek manuscripts. In contrast to the three passing lusts of the world, the doer of God's will has three abiding goods, "riches, honor, and life" (Pr 22:4).