"No man has a legal right to this office, to hold the keys of this priesthood, except he be a literal descendant of Aaron"

1. D&C 68: 18
   18 No man has a legal right to this office, to hold the keys of this priesthood, except he be a ^aliteral descendant and the firstborn of Aaron.
2. D&C 107: 16
   16 No man has a legal right to this office, to hold the keys of this priesthood, except he be a ^aliteral descendant of ^bAaron.