{Set on him} (ep' aut(9369)). Resting upon (epi) with
locative rather than eis, looking to,  Ac 24:15 . That is upon
Christ (Brooke), upon God (D. Smith), upon God in Christ
(Westcott). {Purifieth himself} (hagnizei heauton). Present
active indicative of hagniz(935c), old verb, from hagnos (pure
from contamination), used of ceremonial purifications ( Joh
11:55  Ac 21:24,26  as in  Ex 19:10 ) and then of personal
internal cleansing of heart ( Jas 4:8 ), soul ( 1Pe 1:22 ), self
(here). Cf.  Php 2:12f.  the work of both God and man. {As he is
pure} (kath(9373) ekeinos hagnos estin). As in  2:6  3:9  ekeinos
(emphatic demonstrative) refers to Christ. Christ can be termed
hagnos "in virtue of the perfection of his humanity"
(Westcott). Our destiny is to be conformed to the image of God in
Christ ( Ro 8:29 ).