Protestant doctrine holding that the inner witness of the Holy Spirit allows the justified to known that he or she is saved
Assurance is the doctrine typically associated with Protestantism that holds that believers can be assured of their salvation as a result of the inner witness of the Holy Spirit. It is based on the writings of St. Augustine, and formed an important part of the theology of early Protestant leaders such as Martin Luther, John Calvin, and John Wesley.
Others, such as Roman Catholics, do not consider assurance of final salvation to be a usual experience.
