1 Peter 1:15

“But as he which hath called you is holy, etc.] Which is a periphrasis of God the Father, who had called them, not merely in an external way, by the outward ministry of the word; but internally, powerfully, and efficaciously, by his Spirit and grace; and who had called them to holiness of life and conversation, as well as in calling had implanted principles of holiness in them, and therefore is said to call them with an holy calling; and who himself is holy, naturally, perfectly, and originally, and in such sense as no creature is, angels or men; and is glorious in holiness, and is the source and fountain of holiness in others: therefore [so] be ye holy in all manner of conversation; which…”

“Literally, "But (rather) after the pattern of Him who hath called you (whose characteristic is that He is) holy, be (Greek, 'become') ye yourselves also holy." God is our grand model. God's calling is a frequently urged motive in Peter's Epistles. Every one that begets, begets an offspring resembling himself [EPIPHANIUS]. "Let the acts of the offspring indicate similarity to the Father" [AUGUSTINE]. conversation--deportment, course of life: one's way of going about, as distinguished from one's internal nature, to which it must outwardly correspond. Christians are already holy unto God by consecration; they must be so also in their outward walk and behavior in all respects. The outward must…”

“But as he which hath called you is holy - On the word called, see the notes at Ephesians 4:1. The meaning here is, that the model or example in accordance with which they were to frame their lives, should be the character of that God who had called them into his kingdom. They were to be like him. Compare the notes at Matthew 5:48. So be ye holy in all manner of conversation - In all your conduct. On the word “conversation,” see the notes at Philippians 1:27. The meaning is, that since God is holy, and we profess to be his followers, we also ought to be holy. return to 'Top of Page'”

“1:15-16 “You must be holy because I am holy”: This is a common refrain in Scripture, that God’s people must be holy as God is holy (see Lev 11:44-45; 19:2; 20:7; see also Ezek 20:12; Eph 1:4; 1 Thes 4:3; Rev 22:11).”

“as: Pe1 2:9, Pe1 5:10; Rom 8:28-30, Rom 9:24; Phi 3:14; Th1 2:12, Th1 4:7; Ti2 1:9; Pe2 1:3, Pe2 1:10 is: Isa 6:3; Rev 3:7, Rev 4:8, Rev 6:10 so: Mat 5:48; Luk 1:74, Luk 1:75; Co2 7:1; Eph 5:1, Eph 5:2; Phi 1:27, Phi 2:15, Phi 2:16; Th1 4:3-7; Tit 2:11-14, Tit 3:8, Tit 3:14; Heb 12:14; Pe2 1:4-10 in: Pe1 2:12, Pe1 3:16; Phi 3:20; Ti1 4:12; Heb 13:5; Jam 3:13; Pe2 3:11-14 1 Peter 1:16”