Peter quotes God’s statement, “You shall be holy, for I am holy,” as the reason believers’ conduct should match God’s character (1 Peter 1:15–16). The quotation is presented as a written command that grounds the call to holiness (1 Peter 1:16).
In 1 Peter 1:13–16, the writer turns from describing God’s past and future gifts to urging a matching way of life. Because of what has been promised, believers are told to think clearly, stay self-controlled, and fix their hope fully on the grace that will arrive when Jesus is revealed. These verses sit at a hinge point in the letter. Just before this, the writer has emphasized a living hope, a guarded inheritance, and joy amid hardship, all tied to what God has initiated and what will be completed at the revealed appearance of Jesus (1 Peter 1:3–12).
These verses mark a clear turn from what God has done and promised (1:3–12) to how the community’s life is meant to match that hope (verse 13). The logic is “because of that story, therefore…” (textual claim: the “therefore” grounds the imperatives). The passage describes a tight link between future-focused hope and present conduct.
A common mistake is to turn the wording into a slogan. The better reading keeps the phrase tied to the passage, the speaker, and the problem the book is addressing.
Start with 1 Peter 1:15-16, then read the surrounding section so the answer stays connected to the passage's flow.
15but just as he who called you is holy, you yourselves also be holy in all of your behavior;
16because it is written, "You shall be holy; for I am holy."