In Neo-Calvinism, sphere sovereignty (Dutch: souvereiniteit in eigen kring) is the concept that each sphere (or sector) of life has its own distinct responsibilities and authority or competence, and stands equal to other spheres of life. Sphere sovereignty involves the idea of an all encompassing created order, designed and governed by God. This created order includes societal communities (such as those for purposes of education, worship, civil justice, agriculture, economy and labor, marriage and family, artistic expression, etc.), their historical development, and their abiding norms. The principle of sphere sovereignty seeks to affirm and respect creational boundaries, and historical differentiation.
Sphere sovereignty implies that no one area of life or societal community is sovereign over another. Each sphere has its own created integrity. Neo-Calvinists hold that since God created everything “after its own kind,” diversity must be acknowledged and appreciated. For instance, the different God-given norms for family life and economic life should be recognized, such that a family does not properly function like a business. Similarly, neither faith-institutions (e.g. churches) nor an institution of civil justice (i.e. the state) should seek totalitarian control, or any regulation of human activity outside their limited competence, respectively.
Sphere sovereignty is an alternative to the worldviews of ecclesiasticism and secularism (especially in its Statist form). During the Middle Ages, a form of Papal Monarchy assumed that God rules over the world through the Church.
Ecclesiasticism was widely evident in the arts. Religious themes were encouraged by art's primary patron, the Church. Similarly, the politics in the Middle Ages often consisted of political leaders doing as the Church instructed. In both economic guilds and agriculture the Church supervised. In the family sphere, the Church regulated sexual activity and procreation. In the educational sphere, several universities were founded by religious orders.
During the Renaissance, the rise of a secularist worldview accompanied the emergence of a wealthy merchant class. Some merchants became patrons of the arts, independent of the Church. Protestantism later made civil government, the arts, family, education, and economics officially free from ecclesiastical control. While Protestantism maintained a full-orbed or holistically religious view of life as distinguished from an ecclesiasticism, the later secular Enlightenment sought to rid society of religion entirely.