“I have told you these things,” Jesus said, “so that in me you may have peace.  In this world you will have trouble.  But take heart! I have overcome the world.”

Therefore, since we are surrounded by such a great cloud of witnesses, let us throw off everything that hinders and the sin that so easily entangles, and let us run with perseverance the race marked out for us.  Let us fix our eyes on Jesus, the author and perfecter of our faith, who for the joy set before him endured the cross, scorning its shame, and sat down at the right hand of the throne of God.

This is how we know what love is: Jesus Christ laid down his life for us.  And we ought to lay down our lives for our brothers.