“But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light. Once you were not a people, but now you are God’s people; once you had not received mercy, but now you have received mercy.” (1 Peter 2:9-10 ESV)
Jonathan Edwards:
“God has chosen you not merely to be his subjects and servants, but to be his children, to be his particular treasure. He has chosen you to be blessed forever in the enjoyment of himself, and to dwell with him in his glory. He has given you from all eternity to his Son, to be united unto him, to become the spouse of Christ. He has chosen you that you might be holy and without blame, that you might have your filth taken away, and that you might have the image of God put upon you, and that your soul might be adorned, to be the bride of his glorious and dear Son. What cause for love is here!”