John Chrysostom

For lest any should say, "What is the example of the body to us? since the body is a slave to nature but our good deeds are of choice;" he applies it to our own concerns; and to signify that we ought to have the same concord of design as they have from nature, he saith, "Now ye are the body of Christ." But if our body ought not to be divided, much less the body of Christ, and so much less as grace is more powerful than nature. …

Homily on 1 Corinthians 32 ↗

Theophylact of Ohrid

Lest they should say: "how does the example of the body and members relate to us?", he says: and you are the body of Christ and members. If in the human body there should be no discord, then how much more so in the body of Christ? Since they alone did not constitute the fullness of the body of Christ, but rather the believers throughout the whole world, he added: "and individually members." Although they did not constitute the whole body, they were nevertheless members, and indeed "individually." For in relation to your church, you …

Commentary on 1 Corinthians ↗

Thomas Aquinas

Then when he says: Now you are, he adapts the likeness to his proposition. First, in regard to the unity of the body, saying: Now you, who are assembled in the unity of faith, are the body of Christ, according to Eph (1:22): "He made him the head over all things for the church, which is his body." Secondly, as to the distinction of members, when he adds: And individually members of it. …

Commentary on 1 Corinthians ↗