One of the most effective weapons satan uses against the church is the tactic of division.  The satanic realm knows that if the Church of Jesus Christ can stand together as one we can be the most powerful force on earth, so the work to divide and conquer us is never-ending.  And this is why Jesus prayed in John 17 that His followers would be one just as the Father and Son are one.  Learn in this teaching why unity in the Church is so important to Jesus, how we allow ourselves to get out of unity, and the impact -- good or bad -- of both.