He was thoroughly permeated with perfection, knowledge, wisdom, and excellence. All that He spoke was truth. All that He did was truth. All that He thought was truth. That was the true Light, which lighteth every man that cometh into the world.
Light reveals truth.
Light illuminates where darkness has covered. The truth of Christ condemns and curse all that does not measure up to his perfection. The rule of law is path that truth takes, and there can be no exceptions. He is the perfect manifestation of God to humans. We cannot fully understand His perfections.