'Fiercely' in the Bible

The bellows blow fiercely to consume the lead with the fire. The assayer keeps on refining, but the impurities aren't separated out.

I'll terrify Elam before their enemies and before those who seek to kill them. I'll bring on them disaster and become fiercely angry at them," declares the LORD. "I'll send the sword after them, until I've made an end of them.