The Apostle Paul
1 Corinthians 12:12BSB·traditional attribution

The body is a unit, though it is composed of many parts. And although its parts are many, they all form one body. So it is with Christ.

John Calvin Reformed @genevareformer

12. For as the body is one He now derives a similitude from the human body, which he makes use of also in Romans 12:4; but it is for a different purpose, as I have already stated above. In that passage, he exhorts every one to be satisfied with his own calling, and not to invade another’s territory; as ambition, curiosity, or some other disposition...

Matthew Henry Presbyterian @wholebiblehenry

The apostle here makes out the truth of what was above asserted, and puts the gifted men among the Corinthians in mind of their duty, by comparing the church of Christ to a human body. I. By telling us that one body may have many members, and that the many members of the same body make but one body (Co1 12:12): As the body is...

Commenting on 1 Corinthians 12:12-26

John Gill Reformed Baptist @doctorgill

For as the body is one,.... That is, an human body; for of this the apostle speaks, and takes a simile, and forms a comparison from, showing the union among saints, and their mutual participation of the various gifts of the Spirit; for an human body is but one body, and not more. And hath many members; as eyes, ears, hands, feet, &c.