Justice is the result which truth produces. For example, if Congress passes a good bill, it's because the truth caught up to them, not because they happened to be moral that day. Only if the power of truth flows in that direction, can justice be produced. So truth needs to be understood. Truth is the ability to bring the universe down and apply it to human activities.
Nobody can defy truth, because it has the universe behind it.
It therefore creates its own force, which is the force of justice. Sin is the only real problem there is. Without sin, problems become nonexistent. Sin cannot exist in the light of truth. So developing truth about sin ends the sin.