Hebrews 7:12 ?For the priesthood being changed, there is made…

Hebrews 7:12 ?For the priesthood being changed, there is made of necessity a change also of the law.

??, ?? ??? ??? ?????? ???????????’? ?????????? ??? ??????? , ????? & ??? ??? ???? ??? & ?????????? ?????? ?? ??? ????? ?????, ???? ???????????’s ?????(??????? ???? ??????????) ?? ??? ?? ????? ??? ????????? ?????(?????? ???? ??????????), ?????? ????? ???? ?? ??????? ???? ?????????? ????? ??? ? ?????? ?? ??? ?????.
Verse 11 reads:? If therefore perfection were by the Levitical priesthood, (for under it the people received the law,) what further need was there that another priest should rise after the order of Melchisedec, and not be called after the order of Aaron?

■■■▪︎▪︎▪︎Rephrased question▪︎▪︎▪︎■■■?

?IF PERFECTION WERE by the said ancient Melchizedek order what further need was there for an Aaron priesthood?▪︎■■■■