Paul uses several analogies to describe the church. One is the body. In First Corinthians 12:15-21 Paul shows the absurdity of our physical bodies having a conversation that looks like this: “The foot says ‘since I am not a hand, I don’t belong here’ and the eye says to the hand, ‘I don’t need you'” Our physical body is made up of parts that are all necessary. The lesson we can learn as believers is this. First, don’t be like a foot and say, “I don’t have the abilities of so and so, I am not crucial to the body of Christ.” Second, don’t be like an eye and say, “I can do so much more than so and so, I don’t need them.”
The fact is that we all need each other. Every one of us plays an important role in the body of Christ. Just like Paul needed Barnabas and Timothy, we all need each other. This also means that someone needs you. You have a role to play in God’s Kingdom. What are you waiting for?