John Chrysostom

And therefore our Lord goes on to show that all these things did not happen in a common way, but from the predestined purpose of God. Hence it follows, And beginning at Moses and all the Prophets, he expounded to them in all the Scriptures the things concerning himself. As if He said, Since ye are slow I will render you quick, by explaining to you the mysteries of the Scriptures. For the sacrifice of Abraham, when releasing Isaac he sacrificed the ram, prefigured Christ's sacrifice. …

Catena Aurea by Aquinas ↗

Theophylact of Ohrid

But since, He says, you are "foolish," that is, "slow" (for if they were truly foolish, He would not have said anything to them at all), since you are slow, I will open your mind and make it quick in understanding. Therefore He explained to them from Moses and from all the prophets the things said concerning Him. …

Commentary on Luke ↗

Bonaventure

And therefore, for the explanation of this, the Evangelist adds: And beginning from Moses and all the Prophets, he interpreted to them in all the Scriptures the things that were about him. For all the Scriptures and prophecies principally have reference to Christ. In designation of whom it is said in Exodus twenty-five that "the two Cherubim looked upon each other with faces turned toward the mercy seat," that is, the two testaments toward Christ. …

Commentary on Luke, Chapter 24 ↗