Who art thou? (su tis ei̇). Proleptic position of su, “thou who art thou?”
The servant of another (allotrion oiketēn). Not another (allon) servant (household servant, oiketēn), but “another’s servant.” For the adjective allotrios, see note on Luk 16:12 and note on 2Co 10:15.
Shall be made to stand (stathēsetai). Future passive of histēmi. In spite of your sharp criticisms of one another.
Hath power (dunatei). Verb found only in Paul (2Co 9:8; 2Co 13:3; Rom 14:4), from verbal adjective dunatos.