One of the most unique doctrines that Latter-day Saints espouse is that the Light of Christ is given to all men.

The Light of Christ is defined scripturally as a “light which is in all things, which giveth life to all things, which is the law by which all things are governed, even the power of God who sitteth upon his throne, who is in the bosom of eternity, who is in the midst of all things” (Doctrine & Covenants 88:13). The Light “is given to every man, that he may know good from evil; wherefore, I show unto you the way to judge; for every thing which inviteth to do good, and to persuade to believe in Christ, is sent forth by the power and gift of Christ” (Moroni 7:16). The Doctrine & Covenants also explains that “the Spirit giveth light to every man that cometh into the world; and the Spirit enlighteneth every man through the world, that hearkeneth to the voice of the Spirit” (Doctrine & Covenants 84:46).

It is through the Light of Christ that God has access to all things in the universe including, if any, their subjective experience. 

Elder David A. Bednar explained, “[t]he Light of Christ is what many people would call a ‘conscience’; but it’s more than a psychological effect that takes place within people. Someone can be riding on a bus, see someone in distress, and feel a compassion and a desire to assist and serve this person. Many people would say ‘nah, that’s just natural behavior.’ But it’s more. It is the influence of God that pulls us, that influences us, to be good and to do good. Every person ever born in history, now, in the future is influenced by the Light of Christ for goodness. As we yield to that influence to do good and become good, then the Light of Christ increases within us. As we disobey, Light is decreased and can ultimately be diminished.”⁹⁹ Indeed, Nephi tells us that someone can be “past feeling” (1 Nephi 17:45).

The Doctrine & Covenants hopefully informs us that “[t]hat which is of God is light; and he that receiveth light and continueth in God, receiveth more light; and that light groweth brighter and brighter until the perfect day” (Doctrine & Covenants 50:24).