Fire . . .
Re:3:18: I counsel thee to buy of me gold tried in the fire, that thou mayest be rich; and white raiment, that thou mayest be clothed, and that the shame of thy nakedness do not appear; and anoint thine eyes with eyesalve, that thou mayest see.
Re:3:19: As many as I love, I rebuke and chasten: be zealous therefore, and repent.
Psalms:147:17: He casteth forth his ice like morsels: who can stand before his cold?
Psalms:147:18: He sendeth out his word, and melteth them: he causeth his wind to blow, and the waters flow.
Re:3:15: I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot.
Re:3:16: So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.
HE can work with hot or cold. But HE chooses not to with the lukewarm.