Canon 187

1. Canonical provision is necessary for anyone to be promoted

to the episcopate, by which the person is constituted the eparchial bishop of a determined eparchy or by which another determined function in the Church is committed to him. 2. Prior to

episcopal ordination the candidate is to make a profession of

faith and a promise of obedience to the Roman Pontiff and, in

patriarchal Churches, also a promise of obedience to the patriarch in those matters in which he is subject to the patriarch

according to the norm of law.