A religious trek is also called a pilgrimage.
A religious expedition is often referred to as a pilgrimage. This type of journey is typically motivated by faith, and pilgrims visit locations of religious significance as part of their spiritual practice.
Pilgrimage
A woman who takes religious vows is called a nun.
Religious painting with a sacred meaning is called "religious art" or "sacred art." These types of paintings often depict religious figures, scenes from religious texts, or themes central to a particular faith tradition.
The religious doctrine that emphasizes a return to rigid principles is called "fundamentalism." "Atheism" refers to an absence of religious or spiritual belief.
A small religious community is typically referred to as a cult or sect.
Secularism.
Crusade
Pilgrimage is the first to pop into my mind
religious freedom and wealth
An archaeological expedition is also commonly referred to as an archaeological dig, excavation, or fieldwork.
An expedition.
An expedition.
They were called the Corps of Discovery.
It is an overland expedition team. It is called Astor Expedition or Hunt Team. The word "Astor" came from the financier of the expedition J J Astor.
Religious father is called a baba. Sometimes he is also called mathadhipati.
A Christian religious hermit is called an eremite.
They are traveling to explore or experience something in one form or another, a hunting trip to africa could be called an expedition, and a sight-seeing trip to china could also be called an expedition.
If you are deeply religious, then you are devout.