1 Corinthians 1:9

9 faithful [is] God, through whom ye were called to the fellowship of His Son Jesus Christ our Lord.

1 Corinthians 1:9 Meaning and Commentary

1 Corinthians 1:9

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

unto 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.

1 Corinthians 1:9 In-Context

7 so that ye are not behind in any gift, waiting for the revelation of our Lord Jesus Christ,
8 who also shall confirm you unto the end -- unblamable in the day of our Lord Jesus Christ;
9 faithful [is] God, through whom ye were called to the fellowship of His Son Jesus Christ our Lord.
10 And I call upon you, brethren, through the name of our Lord Jesus Christ, that the same thing ye may all say, and there may not be divisions among you, and ye may be perfected in the same mind, and in the same judgment,
11 for it was signified to me concerning you, my brethren, by those of Chloe, that contentions are among you;
Young's Literal Translation is in the public domain.