Corpus of Electronic Texts Edition
The fifteen tokens of Doomsday (Author: [unknown])

section 52

Oh then well for him who shall be with good morals and good works to inhabit that City on the day of Doom! For he will be in the unity of each of the three, namely, in the unity that is greatly nobler than any unity, the unity of the royal Trinity of the Father and the Son and the Holy Ghost.