1 Corinthians 12:21 - Albert Barnes' Notes on the Bible

And the eye cannot say unto the hand ... - The hand in its place is as needful as the eye; and the feet as the head. Nay, the eye and the head could not perform their appropriate functions, or would be in a great measure useless but for the aid of the hands and feet. Each is useful in its proper place. So in the church. Those that are most talented and most richly endowed with gifts, cannot say to those less so, that there is no need of their aid. All are useful in their place. Nay, those who are most richly endowed could very imperfectly perform their duties without the aid and cooperation of those of more humble attainments.