Surely he was (erstwhile) joyful among his followers.

We used to pray to Him erstwhile He is the just and merciful.

Good and evil are not alike. Repel evil with what is good. Then you will find your erstwhile enemy like a close. affectionate friend.

You let it cool to room temperature, and then, as the ammonia re evaporates and combines with the water back on the erstwhile hot side, it creates a powerful cooling effect.