2:17–21 The quotation is from the Greek Old Testament text of Joel 2:28–32 (3:1–5). Peter’s use of the words “in the last days” (cf. Is. 2:2; Hos. 3:5; Mic. 4:1; 1 Tim. 4:1; 2 Tim. 3:1; 1 Pet. 1:20; 1 John 2:18) makes explicit that Joel is referring to the last times promised by God. Peter interprets Joel’s words as referring to the new covenant in contrast to the former days of the old covenant (Heb. 8:7; 9:1).