In John 17, Jesus prays that His followers may be one as He and the Father are one. The goal of this unity was so that the world might know that God sent Jesus and loved the world as God loved His Son. Sadly, not only does this unity not exist today, but most Christians ignore this central (and extremely difficult) teaching. This lesson takes a hard look at Jesus' expectations regarding unity, what Christian unity does and does not look like, and provides an example from history to inspire us to strive for the unity Christ prayed for before His death.