Deists argued that all humanity shared an original religion, which they called 'natural religion' as opposed to 'revealed religion'.

True

Explanation:

Deists have always argued the existence of any revealed religion. They belief there is a God who created the world. However, they fill God has given his creation the permission to administer itself via the use of natural law. They do not believe that religion has any supernatural aspect, nor do they believe in the Bible. They belief in conducting one's self ethical through the natural law.