Ezequiel 9

Ezequiel 9:4

God says that only those can escape who have been reborn and signed with the sign of Christ; when sending his angels to lay waste the world and to destroy the human race he threatens more seriously than the last time.… This sign pertains to the passion and blood of Christ and that he is kept safe and unharmed whoever is found in this sign. — Treatise V. An Address to Demetrianus 22