Epistle of Barnabas

But let us now pass to another sort of knowledge and doctrine. There are two ways of doctrine and authority, the one of light, and the other of darkness. But there is a great difference between these two ways. For over one are stationed the light-bringing angels of God, but over the other the angels of Satan. And He indeed (i.e., God) is Lord for ever and ever, but he (i.e., Satan) is prince of the time of iniquity.