Introduction
One verse after the four-fold identity of v. 9, Peter explains the wonder by contrast. We were nobody to God; now we are His. We had no mercy; now we are flooded with it.
Historical Context
Peter echoes Hosea 1:9-10 and 2:23, where God renamed rejected Israel 'Lo-ammi' (not my people) and then 'Ammi' (my people). What Hosea promised Israel, Peter announces to the gathered Gentile-Jewish church.
Original Language Insights
'In time past' (pote) — formerly, once. The word marks an absolute before-and-after.
'Obtained mercy' (eleēthentes) — were shown mercy. The receiving is passive; mercy is given, not earned.
Theological Significance
Identity in Christ is not a self-discovery but a gift. The 'no people' became 'people' only because mercy descended. Belonging is granted, never grown.
Practical Application
Remember what you were. The peculiar people of v. 9 are the no-people of v. 10. Mercy alone made the difference; mercy alone keeps the difference.