Purifying
From BiblePortal Wikipedia
King James Dictionary [1]
Pu'Rifying, pp. Removing foreign or heterogeneous matter cleansing from pollution fining making clear.
Pu'Rifying, n. The act or operation of making pure or of cleansing from extraneous matter or from pollution.
Webster's Dictionary [2]
(p. pr. & vb. n.) of Purify