16 Such was his work here. Again, in the province of Palestine, in that city which was once the seat of Hebrew sovereignty, on the very site of the Lord's sepulchre, he has raised a church of noble dimensions, and adorned a temple sacred to the salutary Cross with rich and lavish magnificence, honoring that everlasting monument, and the trophies of the Saviour's victory over the power of death, with a splendor which no language can describe.
17. In the same country he discovered three places venerable as the localities of three sacred caves: and these also he adorned with costly structures, paying a fitting tribute of reverence to the scene of the first manifestation of the Saviour's presence; while at the second cavern he hallowed the remembrance of his final ascension from the mountain top; and celebrated his mighty conflict, and the victory which crowned it, at the third. All these places our emperor thus adorned in the hope of proclaiming the symbol of redemption to all mankind;
18. that Cross which has indeed repaid his pious zeal; through which his house and throne alike have prospered, his reign has been confirmed for a lengthened series of years, and the rewards of virtue bestowed on his noble sons, his kindred, and their descendants.
19. And surely it is a mighty evidence of the power of that God whom he serves, that he has held the balances of justice with an equal hand, and has apportioned to each party their due reward. With regard to the destroyers of the houses of prayer, the penalty of their impious conduct followed hard upon them: immediately were they swept away, and left neither race, nor house, nor family behind. On the other hand, he whose pious devotion to his Lord is conspicuous in his every act, who raises royal temples to his honor, and proclaims his name to his subjects by sacred offerings throughout the world, he, I say, has deservedly experienced him to be the preserver and defender of his imperial house and race. Thus clearly have the dealings of God been manifested, and this through the sacred efficacy of the salutary Sign.
Source: Oration in Praise of Constantine (New Advent)