2 Peter 1:2

Grace and peace. See on Rom. 1:7; 2 Cor. 1:2.

Be multiplied. The readers already possessed grace and peace in some measure. Now the apostle would have them gain even greater supplies of these heavenly gifts (see ch. 3:18).

Through the knowledge. Or, “in knowledge.” The word here used for “knowledge” (epignosis) is more emphatic than the simple noun form (gnosis), and implies a fuller, more perfect knowledge that comes from contemplation of the object studied. Such knowledge cannot fail to influence the life of the one who gains it. When it centers on the Father and the Son it brings abundant grace and peace into the heart of its possessor. The apostle is very much aware of the efficacy of this epignosis, and refers to it four times in this epistle (here; vs. 3, 8; ch. 2:20).

God, and of Jesus. In contrast with the similar phrase in v. 1, the Greek construction here indicates that the apostle refers to both the Father and the Son.