The truth of Christ is to possess and guide our minds and lives. We must maintain the moral law of God pure from all the infiltrations of sinful man, who is at enmity with the law. The law of heaven should be the law of this world and all the people who live in it. Moral deficiency in all men due to sin is bad enough. But willful departure from the law and rejection is outright opposition to God.
Sinful men have an urge to argue against the nature of the moral law rather than to practice it.
But no man is wise enough to provide his own moral direction, or powerful enough to obey God's commandments. We are answerable to God and not to man. We test our lives by God's standard, not by human situations. We cannot have it both ways. When the moral law as God gave it is proclaimed to the world, then men hear the word and the truth from God and not from man.