De Somniis (lib. i-ii)

Again, when you see, amid the wars and disasters of life, the merciful hand of God and his favourable power held over you and standing in defence of you, be silent yourself; for that champion stands in no need of any assistance. And there are proofs of this fact recorded in the sacred writings; such, for instance, as the verse, "The Lord will fight for us, and ye shall be silent." [*](Exodus xiv. 14. )

And if you see the genuine offspring and the firstborn of Egypt destroyed, namely desire, and pleasures, and pain, and fear, and iniquity, and mirth, and intemperance, and all the other qualities which are similar and akin to these, then marvel and be silent, dreading the terrible power of God;