G3748, G3755
ὅστις hostis 144x
whoever, whatever; whosoever, whatsoever, [Mat 5:39]; [Mat 5:41]; [Mat 13:12]; [Mat 18:4];
its use in place of the simple relative is also required in various cases, which may be learned from the grammars; ἕως ὅτου, i.e. χρόνου, until, [Luk 13:8];
while, [Mat 5:25]