Malachi 3:2-3

But who may abide the day of his comming? and who shall endure, when he appeareth? for he is like a purging fire, and like fullers sope.

And he shall sit downe to trye and fine the siluer: he shall euen fine the sonnes of Leui and purifie them as golde and siluer, that they may bring offerings vnto the Lord in righteousnesse.