I've said this a hundred times, but no one can say it like Brennan.
Jesus said to love one another as I have loved you, a love that will possibly lead to the bloody, anguished gift of yourself; a love that forgives seventy times seven, that keeps no score of wrongdoing. Jesus said this, this love, is the one criterion, the sole norm, the standard of discipleship in the New Israel of God. He said you're going to be identified as his disciples, not because of your church-going, Bible-toting, or song-singing. No, you'll be identified as his by one sign only: the deep and delicate respect for one another, the cordial love impregnated with reverence for the sacred dimension of the human personality because of the mysterious substitution of Christ for the Christian.(pg. 86)