What is Professing?

Professing definition and meaning on Dictionary terms:
verb (used with object)
to lay claim to, often insincerely; pretend to: He professed extreme regret.
to declare openly; announce or affirm; avow or acknowledge: to profess one’s satisfaction.
to affirm faith in or allegiance to (a religion, God, etc.).
to declare oneself skilled or expert in; claim to have knowledge of; make (a thing) one’s profession or business.

to teach as a professor: She professes comparative literature.
to receive or admit into a religious order.

verb (used without object)
to make a profession, avowal, or declaration.
to take the vows of a religious order.