For if you believed Moses, you would also believe me. He shows why Moses will be their accuser. It is because they do not reject his doctrine. We know that it is impossible to offer a greater insult to the servants of God than when their doctrine is despised or reproached. Besides, those whom the Lord has appointed to be ministers of his word, ought to be ready to defend it against despisers; [1] and therefore, he gave to all his prophets a twofold commission, that they might teach and instruct for the salvation of believers, and that, one day, they might confound the reprobate by their testimony. For he wrote concerning me. When Christ says, that Moses wrote concerning him, this needs no long proof with those who acknowledge that Christ is the end and soul of the Law. But if any person be not satisfied with this, and desire to have the passages pointed out to him, I would advise him, first, to read carefully the Epistle to the Hebrews, with which also agrees Stephen's sermon, in the seventh chapter of the Acts of the Apostles; and, next, to observe the quotations which Paul applies to his purpose. I acknowledge, indeed, that there are few in which Moses expressly mentions Christ; but what was the use of the tabernacle, and sacrifices, and all the ceremonies, but to be figures drawn in conformity to that first pattern which was showed to him in the mountain? (Exodus 25:40; Hebrews 8:5.) Thus, without Christ, the whole ministry of Christ vanishes. Again, we see how he continually reminds the people of the covenant of the Fathers which had been ratified in Christ, and even how he makes Christ to be the principal subject and foundation of the covenant. Nor was this unknown to the holy Fathers, who had always their eyes fixed on the Mediator. To treat the subject more largely, would be inconsistent with the brevity at which I aim.

Footnotes

1 - "Contre contempteurs."

He wrote of me - For instance, in reciting the prophecy of Jacob, Genesis 49:10. The scepter shall not depart from Judah, nor a lawgiver from between his feet, until Shiloh come; and unto him shall the gathering of the people be. And in Deuteronomy 18:18 : I will raise them up a Prophet from among their brethren like unto thee; and I will put my words in his mouth, etc. Confer this with Acts 3:22, and Acts 7:37. Besides, Moses pointed out the Messiah in a multitude of symbols and figures, which are found in the history of the patriarchs, the ceremonial laws, and especially in the whole sacrificial system. All these were well-defined, though shadowy representations of the birth, life, sufferings, death, and resurrection of the Savior of the world. Add to this, Moses has given you certain marks to distinguish the false from the true prophet, Deuteronomy 13:1-3; Deuteronomy 18:22, which, if you apply to me, you will find that I am not a false but a true prophet of the Most High God.

For had ye believed Moses,.... The doctrine of Moses, and what he says in his writings:
ye would have believed me; for there is an agreement between Moses and Christ; Christ is the end of the law of Moses, and in him is the accomplishment of his writings:
for he wrote of me; in the books written by him, Christ is spoken of, as the seed of the woman, that should bruise the serpent's head; as the seed of Abraham, in whom all nations of the earth should be blessed; as the Shiloh, to whom the gathering of the people should be; and as that prophet, who should be like unto himself, to whom the people of Israel should hearken; and he wrote many things typically of Christ; and indeed, the whole Mosaic economy was typical of Christ, as the epistle to the Hebrews shows: and therefore disbelieving Christ, was disbelieving Moses; who therefore would be an accuser of them, and a witness against them.

he wrote of me--"an important testimony to the subject of the whole Pentateuch--'of Me'" [ALFORD].

He wrote of me - Every where; in all his writings; particularly Deuteronomy 18:15, Deuteronomy 18:18.