They say that God is not to be feared; therefore all things are in their view free and unchecked. Where, however is God not feared, except where He is not? Where God is not, there truth also is not. Where there is no truth, then, naturally enough, there is also such a discipline as theirs. But where God is, there exists “the fear of God, which is the beginning of wisdom.” Where the fear of God is, there is seriousness, an honourable and yet thoughtful diligence, as well as an anxious carefulness and a well-considered admission (to the sacred ministry)2296 and a safely-guarded communion, and promotion after good service, and a scrupulous submission (to authority), and a devout attendance, and a modest gait, and a united church, and God in all things.
Tertullian
Against Marcion
The Prescription Against Heretics
Chapter XLIII