Theinism is a belief in the existence of a god or gods.

Their'n is a colloquial alternative form of theirs.

The pre-theistic beliefs of ancient civilizations shaped their understanding of the world.

Each of these books has lives of their own.

The theics in the museum are fascinating.

She is a theic.

Pan-en-theists believe that the divine is present in everything.

Theistic Satanists believe in the existence of Satan as a deity.

The Theisens are a lovely family.

My friend's last name is Theisen.