His religious beliefs are still unknown up to now.

For many years, there has been intense discussion among historians on Smith's propensity for religion. While his father showed a deep fondness for Christianity, Smith has sometimes been referred to as a deist who bases his belief in God's existence only on reason and the evidence of the natural world.

This point of view is challenged by the fact that God is never expressly mentioned in his works as an explanation for nature. Simultaneously, some academics have since exaggerated Smith's devotion to God. Additionally, some academics contend that Smith's social and economic theory is religious in essence. Besides, several students have gone on to praise Smith's devotion to God at a later stage of their education. In fact, they assert that his whole theory of social order is based on the logic of God's place in creation. If we leave aside the many readings of Smith's writing, one thing is certain: he was never outspoken about his religion.