John Lightfoot on Matthew 27:52

[And many bodies of saints which slept arose.] You can hardly impute the rending of the hangings to the earthquake, but it must be ascribed rather to another peculiar miracle; since it is more proper for an earthquake to break hard things than soft, and to rend rocks rather than curtains. Rocks were rent by it in those places where sepulchres had been built, so that now the gates of the resurrection were thrown open, the bonds of the grave were unloosed, and the bodies of dead men were made ready, as it were, for their rising again when Christ, the firstfruits, was raised. The Jews had a fancy that the kingdom of the Messias would begin with the resurrection of the dead, as we have noted before; vainly indeed, as to their sense of it; but not without some truth, as to the thing itself: for from the resurrection of Christ the glorious epoch of the kingdom of God took its beginning, as we said before (which he himself also signifieth in those words Matthew 26:29); and when he arose, not a few others arose with him. What they thought of the resurrection that was to be in the days of Messias, besides those things which we have already mentioned, you may see and smile at in this one example: "R. Jeremiah commanded, 'When you bury me, put shoes on my feet, and give me a staff in my hand, and lay me on one side; that when the Messias comes I may be ready.'"