become a member

See: join
References in classic literature ?
His very first point, of course, was to become a member of the Oriental Club, where he spent his mornings in the company of his brother Indians, where he dined, or whence he brought home men to dine.
These consisted in a form to be filled up with the applicant's name, age, and school; a solemn declaration to be signed that he would read a set portion of Holy Scripture every night for a year; and a request for half a crown; this, it was explained, was demanded partly to prove the earnestness of the applicant's desire to become a member of the League, and partly to cover clerical expenses.
but you are certainly unusual, and therefore worthy to become a member of our select society.
Every fit workman in the United States will be possessed by the ambition to become a member of the favored unions.
The prematurely-aged office-boy, who was undoubtedly destined to become a member of the firm some day, answered the ring.
It was much easier to become a Member of Parliament than to become a waiter in that hotel.
He was very nearly blackballed at a West End club of which his birth and social position fully entitled him to become a member, and it was said that on one occasion, when he was brought by a friend into the smoking-room of the Churchill, the Duke of Berwick and another gentleman got up in a marked manner and went out.