In our reading from the letter to the Hebrews the writer challenges us to "Provoke one another to love and good deeds". Hebrews 10:24
This is the job description of a Christian community. We're not talking about competitive Christianity here! The writer of Hebrews is encouraging his audience and us to be a community that meets together regularly to build each other up.
We need each other in the diversity of community to inspire, encourage and build each other up. Community is also a place for accountability, not a place for judgement, but where we are accountable to each other.
It is this kind of community that sustains Christians and allows us to work for the Kingdom of God.
And thank God we have God's Grace and the gift of the Holy Spirit and don't have to do this alone!