4 Jesus then really suffered for all men; for the Cross was no illusion, otherwise our redemption is an illusion also. His death was not a mere show, for then is our salvation also fabulous. If His death was but a show, they were true who said, We remember that that deceiver said, while He was yet alive, After three days I rise again. His Passion then was real: for He was really crucified, and we are not ashamed thereat; He was crucified, and we deny it not, nay, I rather glory to speak of it. For though I should now deny it, here is Golgotha to confute me, near which we are now assembled; the wood of the Cross confutes me, which was afterwards distributed piecemeal from hence to all the world. I confess the Cross, because I know of the Resurrection; for if, after being crucified, He had remained as He was, I had not perchance confessed it, for I might have concealed both it and my Master; but now that the Resurrection has followed the Cross, I am not ashamed to declare it.
Source: Catechetical Lectures (New Advent)