profess
prəˈfɛs/Submit
verb
1.
claim, often falsely, that one has (a quality or feeling).
"he had professed his love for her only to walk away"
synonyms: declare, announce, proclaim, assert, state, affirm, avow, maintain, protest, aver, vow; More
archaic
have or claim knowledge or skill in (a subject or accomplishment).
2.
affirm one's faith in or allegiance to (a religion or set of beliefs).
"a people professing Christianity"
synonyms: state/affirm one's faith in, affirm one's allegiance to, make a public declaration of, declare publicly, avow, confess, acknowledge publicly
"in 325 the Emperor himself professed Christianity"