Esprit De Corps, means the "spirit of the corporation (body or group)".

What is the Spirit of your group of believers?  Do you have the type of fellowship that a family has?  or that of close brothers?  or that of soldiers willing to die for each other?

Take the lessons I learned from the Marine Corps about this principle and see if you can apply it to your fellow believers.  Hopefully this is not a new take on Christian brotherhood for you.  If it is new to you, please seriously consider the significance of being a brother to your fellow believer.

1 Peter 2:17 "Honour all men. Love the brotherhood. Fear God. Honour the king."