Galatians 4:11

I am afraid of you (poboumai uma). He shudders to think of it. Lest by any means I have bestowed labour upon you in vain (mh pw eikh kekopiaka ei uma). Usual construction after a verb of fearing about what has actually happened (mh pw and the perfect active indicative of kopiaw, to toil wearily). A fear about the future would be expressed by the subjunctive. Paul fears that the worst has happened.