espouse

(verb) choose and follow; as of theories, ideas, policies, strategies or plans. Synonyms: adopt, follow. Examples: "She followed the feminist movement." "The candidate espouses republican ideals."

(verb) take in marriage. Synonyms: marry, get married, wed, conjoin, hook up with, get hitched with.

(verb) take up the cause, ideology, practice, method, of someone and use it as one's own. Synonyms: embrace, adopt, sweep up. Examples: "She embraced catholicism." "They adopted the jewish faith."