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.

People's New Testament

2:10 Which in time past were not a people. Not a people of God. See Ho 2:23, which Peter quotes. The prophets in many places foretold the call of the Gentiles. See Ro 9:25,26.

Wesley's Notes

2:10 Who in time past were not a people - Much less the people of God; but scattered individuals of many nations. The former part of the verse particularly respects the gentiles; the latter, the Jews.

Jamieson-Fausset-Brown Bible Commentary

10. Adapted from Ho 1:9, 10; 2:23. Peter plainly confirms Paul, who quotes the passage as implying the call of the Gentiles to become spiritually that which Israel had been literally, "the people of God." Primarily, the prophecy refers to literal Israel, hereafter to be fully that which in their best days they were only partially, God's people.

not obtained mercy-literally, "who were men not compassionated." Implying that it was God's pure mercy, not their merits, which made the blessed change in their state; a thought which ought to kindle their lively gratitude, to be shown with their life, as well as their lips.

Matthew Henry's Concise Commentary

2:1-10 Evil-speaking is a sign of malice and guile in the heart; and hinders our profiting by the word of God. A new life needs suitable food. Infants desire milk, and make the best endeavours for it which they are able to do; such must be a Christian's desires after the word of God. Our Lord Jesus Christ is very merciful to us miserable sinners; and he has a fulness of grace. But even the best of God's servants, in this life, have only a taste of the consolations of God. Christ is called a Stone, to teach his servants that he is their protection and security, the foundation on which they are built. He is precious in the excellence of his nature, the dignity of his office, and the glory of his services. All true believers are a holy priesthood; sacred to God, serviceable to others, endowed with heavenly gifts and graces. But the most spiritual sacrifices of the best in prayer and praise are not acceptable, except through Jesus Christ. Christ is the chief Corner-stone, that unites the whole number of believers into one everlasting temple, and bears the weight of the whole fabric. Elected, or chosen, for a foundation that is everlasting. Precious beyond compare, by all that can give worth. To be built on Christ means, to believe in him; but in this many deceive themselves, they consider not what it is, nor the necessity of it, to partake of the salvation he has wrought. Though the frame of the world were falling to pieces, that man who is built on this foundation may hear it without fear. He shall not be confounded. The believing soul makes haste to Christ, but it never finds cause to hasten from him. All true Christians are a chosen generation; they make one family, a people distinct from the world: of another spirit, principle, and practice; which they could never be, if they were not chosen in Christ to be such, and sanctified by his Spirit. Their first state is a state of gross darkness, but they are called out of darkness into a state of joy, pleasure, and prosperity; that they should show forth the praises of the Lord by their profession of his truth, and their good conduct. How vast their obligations to Him who has made them his people, and has shown mercy to them! To be without this mercy is a woful state, though a man have all worldly enjoyments. And there is nothing that so kindly works repentance, as right thoughts of the mercy and love of God. Let us not dare to abuse and affront the free grace of God, if we mean to be saved by it; but let all who would be found among those who obtain mercy, walk as his people.