DC 68:2c wherefore they shall be high priests who are worthy, and they shall be appointed by the First Presidency of the Melchisedec priesthood, except they be literal descendants of Aaron, and if they be literal descendants of Aaron, they have a legal right to the bishopric, if they are the firstborn among the sons of Aaron; for the firstborn holds the right of the presidency over this priesthood, and the keys or authority of the same.
DC 68:2d No man has a legal right to this office, to hold the keys of this priesthood, except he be a literal descendant and the firstborn of Aaron; but as a high priest of the Melchisedec priesthood has authority to officiate in all the lesser offices, he may officiate in the office of bishop when no literal descendant of Aaron can be found;
DC 68:2f And a literal descendant of Aaron, also must be designated by this presidency, and found worthy, and anointed, and ordained under the hands of this presidency, otherwise they are not legally authorized to officiate in their priesthood;
DC 104:8c The bishopric is the presidency of this priesthood, and holds the keys or authority of the same. No man has a legal right to this office, to hold the keys of this priesthood, except he be a literal descendant of Aaron.
DC 104:8d But as a high priest of the Melchisedec priesthood has authority to officiate in all the lesser offices, he may officiate in the office of bishop when no literal descendant of Aaron can be found, provided he is called and set apart and ordained unto this power by the hands of the Presidency of the Melchisedec priesthood.
DC 104:18 The order of this priesthood was confirmed to be handed down from father to son, and rightly belongs to the literal descendants of the chosen seed, to whom the promises were made. This order was instituted in the days of Adam, and came down by lineage in the following manner:
DC 104:32b nevertheless, a bishop must be chosen from the high priesthood, unless he is a literal descendant of Aaron; for unless he is a literal descendant of Aaron he can not hold the keys of that priesthood.
DC 104:32d This is the duty of a bishop who is not a literal descendant of Aaron, but has been ordained to the high priesthood after the order of Melchisedec.
DC 104:34a But a literal descendant of Aaron has a legal right to the presidency of this priesthood, to the keys of this ministry, to act in the office of bishop independently, without counselors, except in a case where a president of the high priesthood, after the order of Melchisedec, is tried; to sit as a judge in Israel.