Omnism is the respect of or belief in all religions with their gods or lack thereof. Those who hold this belief are called omnists, sometimes written as omniest. In recent years, the term has been resurfacing due to the interest of modern-day self-described omnists who have rediscovered and begun to redefine the term. Omnism is similar to syncretism, the belief in a fusion of faiths in harmony. However, it can also be seen as a way to accept the existence of various religions without believing in all that they profess to teach. Many omnists say that all religions contain truths, but that no one religion offers all that is truth.
Sri Ramakrishna, the Hindu saint, believed in all religions being true.
Contemporary usage has modified "belief in all religions" to refer more to an acceptance of the legitimacy of all religions. The Oxford English Dictionary elaborates that an omnist believes "in a single transcendent purpose or cause uniting all things or people". That is not necessarily the conclusion of those who describe themselves as omnists. Some omnists interpret this to mean that all religions contain varying elements of a common truth, or place omnism in opposition to dogmatism, in that omnists are open to potential truths from all religions. However, this does not mean that there is a single transcendent purpose or cause that unites. There may indeed be an infinite number of possibilities, or a deeper form of uncertainty in reality. There may be an influence more akin to existentialism in which consciousness is a power or force that helps determine the reality, yet is not a divine influence.
The Oxford dictionary defines an omnist as "a person who believes in all faiths or creeds; a person who believes in a single transcendent purpose or cause uniting all things or people, or the members of a particular group of people". Edward Herbert, 1st Baron Herbert of Cherbury, considered the first Deist, argued that all religions were true. In the poem All Religions are One, William Blake professed that every religion originated from God's revelation.