2 Peter 3:18

“But grow in grace, etc.] In the gifts of grace, which, under a divine blessing, may be increased by using them: gifts neglected decrease, but stirred up and used, are improved and increase. And though men are to be thankful for their gifts, and be contented with them, yet they may lawfully desire more, and in the use of means seek an increase of them, which may be a means of preserving themselves, and others, from the error of the wicked. Moreover, by “grace” may be meant internal grace. The work of grace is gradual; it is like a grain of mustard seed, or like seed cast into the earth, which springs up, it is not known how, first the blade, then the ear, then the full corn in the ear; saints…”

“grow--Not only do not "fall from" (Pe2 3:17), but grow onward: the true secret of not going backward. Eph 4:15, "Grow up into Him, the Head, Christ." grace and . . . knowledge of . . . Christ--"the grace and knowledge of Christ" [ALFORD rightly]: the grace of which Christ is the author, and the knowledge of which Christ is the object. for ever--Greek, "to the day of eternity": the day that has no end: "the day of the Lord," beginning with the Lord's coming. Next: 1 John Introduction”

“But grow in grace - Compare Colossians 1:10. Religion in general is often represented as “grace,” since every part of it is the result of grace, or of unmerited favor; and to “grow in grace” is to increase in that which constitutes true religion. Religion is as susceptible of cultivation and of growth as any other virtue of the soul. It is feeble in its beginnings, like the grain of mustard seed, or like the germ or blade of the plant, and it increases as it is cultivated. There is no piety in the world which is not the result of cultivation, and which cannot be measured by the degree of care and attention bestowed upon it. No one becomes eminently pious, any more than one becomes eminently…”

“But grow in grace - That is, in every Christian temper. There may be, for a time, grace without growth; as there may be natural life without growth. But such sickly life, of soul or body, will end in death, and every day draw nigher to it. Health is the means of both natural and spiritual growth. If the remaining evil of our fallen nature be not daily mortified, it will, like an evil humour in the body, destroy the whole man. But "if ye through the Spirit do mortify the deeds of the body," (only so far as we do this,) "ye shall live" the life of faith, holiness, happiness. The end and design of grace being purchased and bestowed on us, is to destroy the image of the earthy, and restore us to…”

“grow: Psa 92:12; Hos 14:5; Mal 4:2; Eph 4:15; Col 1:10; Th2 1:3; Pe1 2:2 knowledge: Pe2 1:3, Pe2 1:8, Pe2 2:20; Joh 17:3; Co2 4:6; Eph 1:17; Phi 3:8; Col 1:10, Col 3:10 To him: Joh 5:23; Ti2 4:18; Pe1 5:10, Pe1 5:11; Jde 1:25; Rev 1:6, Rev 5:9-14 Amen: Mat 6:13, Mat 28:20 Next: 1 John Chapter 1”