Tertullian

“ Inquire, I say, we must, whether this giver of the new law, observer of the spiritual sabbath, priest of the eternal sacrifices, eternal ruler of the eternal kingdom, be come or no: that, if he is already come, service may have to be rendered him; if he is not yet come, he may have to be awaited, until by his advent it be manifest that the old Law’s precepts are suppressed, and that the beginnings of the new law ought to arise. ”

“ And so there is incumbent on us a necessity [4] binding us, since we have premised that a new law was predicted by the prophets, and that not such as had been already given to their fathers at the time when He led them forth from the land of Egypt, [5] to show and prove, on the one hand, that that old Law has ceased, and on the other, that the promised new law is now in operation. ”