1 Corinthians 12:18 (ESV)

18 But as it is, God arranged the members in the body, each one of them, as he chose.

God is the Creator of the human body, with its wonderful unity in variety. By implication he is also the Creator of the body of Christ, the church. Every local church has been arranged by him in specific ways and with specific ends in mind. Knowing this should serve to keep church members humble toward God and one another (see 1 Corinthians 4:7; 1 Corinthians 11:11–12).