A person who studies elements of a religion is typically referred to as a religious scholar or a theologian. Religious scholars may focus on various aspects, including beliefs, practices, texts, and historical contexts of a specific faith or multiple religions. The term can also vary based on the specific field of study, such as a historian of religion or a comparative religion expert.
The study of religion is called theology
Theology.
Priests study at a theological college A THEOLOGIAN Priests/ministers study at a seminary. Members of all faiths can study theology and religion at a Divinity School, which is not exclusively Christian.
Theology.
Oceanographer
chemistry
A person who studies bats is called a chiropterologist.
Oceanographer
scientist
A person who is involved in the astronomical study of sun is called a Heliologist
Philosophy is just a study of information, if you study religion it is called theology and theosophy instead.
A person who studies the Earth is called a geologist. Geologists study the composition, structure, and processes of the Earth to understand its history and dynamics.