And to the angel of the church in Philadelphia write; These things says he that is holy, he that is true, he that has the key of David, he that opens, and no man shuts; and shuts, and no man opens;
All Commentaries on Revelation 3:7 Go To Revelation 3
Victorinus of Pettau
AD 303
The sixth class is the mode of life of the best election. The habit of saints is set forth; of those, to wit, who are lowly in the world, and unskilled in the Scriptures, and who hold the faith immoveably, and are not at all broken down by any chance, or withdrawn from the faith by any fear.