Doctrine
"Doctrine" of God is the Covenants, Laws, Charters, and Commandments given by God to all mankind, teaching the nations how to live righteously.

 "Doctrine" of God is the Holy Will of God revealed by God in His Covenants, Laws, Charters, expressed in the literal and spiritual essence of His Ten Commandments, learned by the Patriarchs, Prophets, Righteous men who revealed to the nations the ways and means of knowing and fulfilling His Commandments, transmitted by them in the Holy Scriptures.

"The Doctrine of Christ" is the holy way of life of Jesus Christ, His understanding of the Will of God, fully conveyed in the Gospels by the Apostles. 

"Doctrine" is also the example of the holy life of all the Patriarchs, Prophets, and Apostles.

Negative Meaning.

"Doctrine" is various political, philosophical, and other ideologies, false religious beliefs, dogmas, traditions, foundations, and laws that teach nations a sinful worldview and way of life.