The issue of security has been a major focus of political thinkers and rulers throughout history and is considered by many to be the main responsibility of the state. The Shia jurisconsults have been concerned with religious and political security for the Shia community during various periods, basing their opinions on Shia jurisprudence, the Koran, and prophetic/imamate traditions. Reservation, hasabiyeh affairs, moqaddameye vajeb, propagation of virtue and prevention of vice, and protection of the Islamic society were among the principles used by Shia jurisconsults to assert the necessity of security for the country and the Shia community. During the Constitutional Era, due to the weakness of the rule of the Qajar Dynasty in ensuring national security for the society, the Shia jurisconsults such as the three important sources of emulation, Akhud Khorasani, Mazandarani, and Tehrani, as well as Ayatollah Naini and other important figures saw the solution to the security issue in the Constitutional Movement and elaborated it through Islamic jurisprudence. This article describes these jurisconsults' religious opinions concerning national security through their political writings.It claims that, in lieu of new views, their conception of nationalsecurity is based on negation.