They went out from us, but they didn't belong to us; for if they had belonged to us, they would have continued with us. But they left, that they might be revealed that none of them belong to us.

 As we have said, the Greek word for propitiation is hilasmos ( G2434) , and the corresponding verb is hilaskesthai ( G2433) . This verb has three meanings. (i) When it is used with a man as the subject, it means to placate or to pacify, someone who has been injured or offended, and especially to placate a god. It is to bring a sacrifice or to perform a ritual whereby a god, offended by sin, is placated. (ii) If the subject is God, the verb means to forgive, for then the meaning is that God himself provides the means whereby the lost relationship between him and men is restored. (iii) The third meaning is allied with the first. The verb often means to perform some deed, by which the taint of guilt is removed. A man sins; at once he acquires the taint of sin; he needs something, which, to use C. H. Dodd's metaphor, will disinfect him from that taint and enable him once again to enter into the presence of God. In that sense hilaskesthai ( G2433) means, not to propitiate but to expiate, not so much to pacify God as to disinfect man from the taint of sin and thereby fit him again to enter into fellowship with God. 