I asked Boyd, the individual whom I quoted over at Nonviolent Jesus, what he meant by "the power of conscience."
This was his response:
What I was referring to is what Gandhi called "truth force". The strategy of nonviolent struggle is to appeal to the conscience and understanding of one's opponent, as we all struggle together toward truth. This is the Jesus I know - the one who grows in us through the power of conscience.
Here's the entire dialogue, for those interested.
I'm a big fan of Ghandi (see the footer of this page). He followed Jesus better than most Christians. And there is definitely truth in the power of the mind and spirit to overcome violence. Every man is born with a conscience, and for this we praise God, for we know the depths of our own depravity and cannot begin to fathom a world where our evil bent was not checked by conscience. Without some collective conscience (or perhaps some common root of conscience) we would not have any basis for common morality.
But to say that Jesus grows in us through the power of conscience just sounds... weak. It sounds like weak theology. I don't know that God talks about a 'power of conscience' at all. I'm reminded that it is the Spirit who is to "teach us all things" (John 14:26) and it is Scripture that equips us for every good work (2 Tim. 3:17).