For when the priesthood is changed, the law must be changed as well.
Berean Standard Bible (BSB)
For the priesthood being changed, there is of necessity a change made also in the law.
World English Bible (WEB)
For{G1063} the priesthood{G2420} being changed{G3346}{(G5746)}, there is made{G1096}{(G5736)} of{G1537} necessity{G318} a change{G3331} also{G2532} of the law{G3551}.
Strong's King James
(12) Because when the priesthood is changed, from necessity, a change of Torah also happens!
The F.O.G
The F.O.G Message
for the priesthood being changed, of necessity also, of the law a change doth come,
Young's Literal Translation