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KJV - And every man that hath this hope in him purifieth himself, even as he is pure.
ASV - And every one that hath this hope `set' on him purifieth himself, even as he is pure.
BBE - And everyone who has this hope in him makes himself holy, even as he is holy.
WEB - Everyone who has this hope set on him purifies himself, even as he is pure.
YLT - and every one who is having this hope on him, doth purify himself, even as he is pure.