<p>2:21 <em>If a man therefore purge himself from these, he shall be a vessel to honour, sanctified, fulfilling the use intended by the master, prepared to do every good work</em>- As noted on :20, the context is about separation from false teaching and not allowing false teachers the platform. The purging from the dishonourable vessels = false teachers, see on :20 therefore doesn't speak of excommunication but of not allowing God's house to have such people teaching within it. The Master of the great house (:20) is surely the Lord Jesus; and He has a use intended for all the apparatus &quot;vessels&quot; within the large household. There were good works intended for us from the foundation of the world (Eph. 2:10). We need to pray to God to reveal to us what those works are, and which uses He has in mind for us. The language in :20 and :21 is alluding to Is. 22:20-24 about the temple. &quot;Prepared to do every good work&quot; must link with 2 Tim. 3:16,17, which says that the word of God enables the man of God to be &quot;perfect, thoroughly furnished unto all good works&quot;. Thus the sanctifying and purging power is the word (as Jn. 17:17; Eph. 5:26).&nbsp;</p>