Full

Romans 15:14 ESV

14 I myself am satisfied about you, my brothers, that you yourselves are full of goodness, filled with all knowledge and able to instruct one another.

Fellowship serves to remind us of things we need to know and strengthen our faith in the midst of one another. The Holy Spirit teaches us through our experience in the body, both our own and the body of Christ. We are full because He fills us. 

νουθετέω * noutheteō * noo-thet-eh'-o * From the same as G3559; to put in mind, that is, (by implication) to caution or reprove gently: - admonish, warn.