For when there is a change in the priesthood, there is of necessity an alteration of the law [concerning the priesthood] as well.
For the priesthood being changed, there is made of necessity a change also of the law.
When the order of the priest changes, there has to be a change in the Law as well.
For since the priesthood has been transferred, it is necessary that the law also be transferred.
For the priesthood being translated, it is necessary that a translation also be made of the law.