King James Version
To the weak became I as weak, that I might gain the weak: I am made all things to all men, that I might by all means save some.English Standard Version
To the weak I became weak, that I might win the weak. I have become all things to all people, that by all means I might save some.New International Version
To the weak I became weak, to win the weak. I have become all things to all men so that by all possible means I might save some.