I.to help, aid, assist, succour, to be of use or service to any one:
2.mostly c. acc. pers., like Lat. juvare, to be of service to, to benefit, Hdt., Aesch., etc.; ὠφ. τινα ἔς τι to be of use to one towards a thing, Thuc.
3.more rarely c. dat. pers., like Lat. prodesse, Trag., Antipho.