There is one common denominator here, we all fall short of the glory of God. We should extend mercy and grace where mercy and grace are due, just as they were extended unto us. Also, at some point in all of our lives, we are going to let someone down, hurt them, or upset them in some way or another. Just like that will happen to us. Keep your eyes on God, trying to grow closer to Him.

I like what Irishguy said, the devil is trying to rip The Churches apart because one on one, we are much weaker