'People of God' in the Bible

To the People of God who are living abroad, dispersed throughout Pontus, Galatia, Cappadocia, Roman Asia, and Bithynia,

But you are an elect race, a royal priesthood, a holy nation, a purchased people, that you may show forth the virtues of Him who has called you out of darkness into his marvelous light??10 you who once were not a people, but now are the people of God; who were once without mercy, but now you have found mercy.

Which in time past were not a people, but are now the people of God: which had not obtained mercy, but now have obtained mercy.