I Corinthians 1:9

God is faithful - The faithfulness of God is a favourite expression among the ancient Jews; and by it they properly understand the integrity of God in preserving whatever is entrusted to him. And they suppose that in this sense the fidelity of man may illustrate the fidelity of God, in reference to which they tell the two following stories. "Rabbi Phineas, the son of Jair, dwelt in a certain city, whither some men came who had two measures of barley, which they desired him to preserve for them. They afterwards forgot their barley and went away. Rabbi Phineas each year sowed the barley, reaped, thrashed, and laid it up in his granary. When seven years had elapsed the men returned, and desired to have the barley with which they had entrusted him. Rabbi Phineas recollected them, and said, 'Come and take your treasure,' i.e. the barley they had left, with all that it had produced for seven years. Thus, from the faithfulness of man ye may know the faithfulness of God." "Rabbi Simeon, the son of Shetach, bought an ass from some Edomites, at whose neck his disciples saw a diamond hanging; they said unto him, Rabbi, the blessing of the Lord maketh rich, Pro 10:22. But he answered: The ass I have bought, but the diamond I have not bought; therefore he returned the diamond to the Edomites. Thus, from the fidelity of man ye may know the fidelity of God." This was an instance of rare honesty, not to be paralleled among the Jews of the present day, and probably among few Gentiles. Whatever is committed to the keeping of God he will most carefully preserve; for he is faithful. Unto the fellowship, etc. - Εις κοινωνιαν, Into the communion or participation of Christ, in the graces of his Spirit and the glories of his future kingdom. God will continue to uphold and save you, if you entr…

faithful--to His promises (Phi 1:6; Th1 5:24). called--according to His purpose (Rom 8:28). unto . . . fellowship of . . . Jesus--to be fellow heirs with Christ (Rom 8:17-28), like Him sons of God and heirs of glory (Rom 8:30; Th2 2:14; Pe1 5:10; Jo1 1:3). CHRYSOSTOM remarks that the name of Christ is oftener mentioned in this than in any other Epistle, the apostle designing thereby to draw them away from their party admiration of particular teachers to Christ alone.

God is faithful, by whom ye were called,.... These words contain arguments, assuring the saints of their confirmation in grace, and of their being preserved blameless to the day of Christ, taken from the faithfulness of God, who is always true to his promises: whatever he has said, he will do it; he will never suffer his faithfulness to fail; and since he has made so many promises concerning the establishment of his people, and their perseverance to grace, they may assure themselves of them; and also from his having called them by his grace, for whom he effectually calls by his grace, he glorifies; and particularly from his having called them into the fellowship of his Son Jesus Christ our Lord; to partake of his grace, and to be heirs of glory with him; to enjoy communion with him in private and public exercises of religion, which is an evidence of being in him, and of union to him; for it is not merely into the fellowship of his saints or churches, but into the fellowship of his Son they are said to be called; and such are members of Christ, of his body, of his flesh, and of his bone; and shall never be lost and perish, but shall be confirmed to the end; be preserved in him blameless, and presented to him faultless, and have everlasting life.

In this chapter we have, I. The preface or introduction to the whole epistle (Co1 1:1-9). II. One principal occasion of writing it hinted, namely, their divisions and the origin of them (Co1 1:10-13). III. An account of Paul's ministry among them, which was principally preaching the gospel (Co1 1:14-17). IV. The manner wherein he preached the gospel, and the different success of it, with an account how admirably it was fitted to bring glory to God and beat down the pride and vanity of men (Co1 1:17 to the end).

1:9 God . . . is faithful: See 10:13; Deut 7:9; 1 Thes 5:24. • he has invited you: God has chosen them and brought them into partnership with his Son (cp. Rom 8:28-39).