διὰ τέλους
From LSJ
ὃν οὐ τύπτει λόγος οὐδὲ ῥάβδος → if words don't get through, neither a beating will | if the carrot doesn't work, the stick will not work either | whom words do not strike, neither does the rod
Greek > English (Woodhouse)
completely, all through, for all time, for ever, of time, through and through