1 Corinthians 12:18-22

But now God has arranged the parts, each one of them in the body, just as He desired.

If they were all one part, where would the body be?

But now there are many parts, but one body.

And the eye cannot say to the hand, “I have no need of you”; or again, the head to the feet, “I have no need of you.”

On the contrary, it is much truer that the parts of the body which seem to be weaker are necessary;