T only makes sense that God would give His children more than just an entrance into His family (Romans 8:32). Don't get me wrong, we don't deserve more. In fact, we didn't even deserve our salvation, much less anything beyond that. But if God is generous enough to give us forgiveness and the promise of heaven, it is no surprise that He is willing to do much more. According to this chapter, God has given gifts to the church and to each member of His church. Since each believer is a part of a whole, God has given everyone an ability; an ability intended to be used to bless the rest of the church (vs. 1, 7 & 11).
The indwelling Holy Spirit certainly drives all of us to proclaim the name of His Son. However, the talents and aptitudes in each of us are not the same (1st Corinthians 12:4-6). Notice the kinds of gifts, which are included in this passage: wisdom, knowledge, faith, healing, miracles, prophecy, discernment, tongues, interpretation, teaching, helps and governments (vs. 8-10 & 28). I'm sure Paul could have listed many other special gifts, but these are enough to make the point. The point is that we all need one another. If one believer has great spiritual knowledge and another one has the gift of great faith, they can accomplish more together than either one could alone. We need each other.