Doctrine was the term utilized for the core beliefs, fundamentals and basis of the Voth race.
Included within the rules of Doctrine were the beliefs that the Voth were the first race in the galaxy, and were indigenous to the Delta Quadrant. Doctrine also formed the basis of Voth culture that revolved around the Ministry of Elders. One issue with Doctrine was the teaching that transwarp was too dangerous for the Voth, a setback that limited the Voth for millennia.
Until the 2370s, the Voth culture believed that they originated in the Delta Quadrant. New evidence presented by a Voth scientist named Forra Gegen, however, supported his Distant Origin Theory and cause it to become more and more prominent. Linking 47 genetic markers with the remains of Hogan, Gegen eventually encountered the USS Voyager, and revelations were made.
Since Doctrine was a vital part of Voth civilization, severe punishment was common for acts against Doctrine. One exception was that in the case of Gegen, he was about to be sentenced to imprisonment, along with the Voyager crew, unless he retracted his findings on the Distant Origin Theory. (VOY: "Distant Origin")