When you create a group, you can choose 3 privacy settings: Public, Closed and Secret. The table below shows who can join these groups and what people can see about them. If you're an admin of a group, learn how to change the privacy settings of your group.
For the album by Pestilence, see Doctrine (album). Doctrine (from Latin: doctrina) is a codification of beliefs or a body of teachings or instructions, taught principles or positions, as the essence of teachings in a given branch of knowledge or belief system. The Greek analogue is the etymology of catechism.
Doctrine, then, is scriptural teaching on theological truths. Doctrine is indispensable to Christianity. Christianity does not exist without it. The New Testament repeatedly emphasizes the value and importance of sound doctrine, sound instruction (1 Tim 6:3), and a pattern of sound teaching (2 Tim 1:13-14).