Catechist (noun)

1. A teacher of the catechism.
2. A person who instructs others in the basic principles of a particular religion or ideology.

Origin:

Late middle english (in catechist (sense 2)): from late latin catechista, from greek katēkhistēs, from katēchein "instruct".

Examples:

1. The Sunday school teacher was also the catechist for the children.
2. The catechist led the group in a discussion about the tenets of their faith.
3. The new priest was trained as a catechist to help spread the teachings of the church.
4. The catechist was skilled in making complex ideas accessible to young minds.
5. The catechist's role was to help prepare the candidates for their confirmation.