{10} If the foot shall say, Because I am not the hand, I am not of the body; is it therefore not of the body?

(10) Now he builds his doctrine upon the foundations which he has laid: and first of all he continues in his purposed similitude, and afterward he goes to the matter plainly and simply. And first of all he speaks unto those who would have separated themselves from those whom they envied, because they had not such excellent gifts as they. Now this is, he says, as if the foot should say it were not of the body, because it is not the hand, or the ear, because it is not the eye. Therefore all parts ought rather to defend the unity of the body, being coupled together to serve one another.

People's New Testament

12:13-20 For in one Spirit were we all baptized into one body. For by means of one spirit we were all baptized into one body (Meyer). Rather, moved by one spirit acting through the apostles and evangelists, we were all baptized into one body, whether Jews or Gentiles, bond or free. The idea is that though diverse in race and condition, all have been made parts of one body by baptism, and that this had all been done under the direction of one spirit. All, too, receiving it as a gift, drank of the same spirit. Hence, if special and extraordinary spiritual gifts were imparted to the members of this body, these would be due to one spirit.

Wesley's Notes

12:15 The foot is elegantly introduced as speaking of the hand; the ear, of the eye; each, of a part that has some resemblance to it. So among men each is apt to compare himself with those whose gifts some way resemble his own, rather than with those who are at a distance, either above or beneath him. Is it therefore not of the body - Is the inference good? Perhaps the foot may represent private Christians; the hand, officers in the church; the eye, teachers; the ear, hearers.

Jamieson-Fausset-Brown Bible Commentary

15. The humbler members ought not to disparage themselves, or to be disparaged by others more noble (1Co 12:21, 22).

foot . hand-The humble speaks of the more honorable member which most nearly resembles itself: so the "ear" of the "eye" (the nobler and more commanding member, Nu 10:31), (1Co 12:16). As in life each compares himself with those whom he approaches nearest in gifts, not those far superior. The foot and hand represent men of active life; the ear and eye, those of contemplative life.

Matthew Henry's Concise Commentary

12:12-26 Christ and his church form one body, as Head and members. Christians become members of this body by baptism. The outward rite is of Divine institution; it is a sign of the new birth, and is called therefore the washing of regeneration, Tit 3:5. But it is by the Spirit, only by the renewing of the Holy Ghost, that we are made members of Christ's body. And by communion with Christ at the Lord's supper, we are strengthened, not by drinking the wine, but by drinking into one Spirit. Each member has its form, place, and use. The meanest makes a part of the body. There must be a distinction of members in the body. So Christ's members have different powers and different places. We should do the duties of our own place, and not murmur, or quarrel with others. All the members of the body are useful and necessary to each other. Nor is there a member of the body of Christ, but may and ought to be useful to fellow-members. As in the natural body of man, the members should be closely united by the strongest bonds of love; the good of the whole should be the object of all. All Christians are dependent one upon another; each is to expect and receive help from the rest. Let us then have more of the spirit of union in our religion.