1 Peter 2:10
Once you were not a people, but now you are the people of God; once you had not received mercy, but now you have received mercy — the contrast between former and present status draws from Hosea 1:6, 9-10, applying prophetic language of Israel's restoration to Christian Gentiles. The transition from non-people (ou laos) to people of God (laos theou) and from non-mercy to mercy (eleēmenoi) establishes believers' complete transformation through God's initiative.