Hebrews 7:12

‘For the priesthood being changed, there becomes of necessity a change also of the law.’

But if the levitical priesthood is replaced by the priesthood after the order of Melchizedek, as the Psalmist is basically declaring, huge consequences follow. The whole situation with regard to the Law changes. For it was the levitical priests who were appointed by the Law to supervise the Law, but the Melchizedekian priesthood precedes the Law, just as Abraham preceded the Law. It existed in the time of promise and was not subject to the Law, and does not have to act in accordance with the Law. Something greater has taken over. The way of the Law has been replaced by the way of the High Priest after the order of Melchizedek. And this is the way of the promises given to Abraham.