Bible doctrine is any subject within the Bible that is taught as a principle, law, or commandment. Some would hold that the wise advice given in the book of Psalms and Proverbs could be classified as doctrine as well, because of the many principle The term CONCEPT used on this website is not referring to abstract ideas of the mind. It is referring to truths that are organized by subject matter or issues and supported by the Scriptures through direct statements or good reasoning. (A concept stated in one of my books.) Scriptural evidence suppo... that can be applied to everyday life.