Ante-Nicene Fathers, Vol VII:
Victorinus: From the fifteenth chapter

from the fifteenth chapter.

1. “And I saw another great and wonderful sign, seven angels having the seven last plagues; for in them is completed the indignation of God.”] For the wrath of God always strikes the obstinate people with seven plagues, that is, perfectly, as it is said in Leviticus; and these shall be in the last time, when the Church shall have gone out of the midst.  

2. “Standing upon the sea of glass, having harps.”] That is, that they stood stedfastly in the faith upon their baptism, and having their confession in their mouth, that they shall exult in the kingdom before God. But let us return to what is set before us.