Steal no more (mēketi kleptetō). Clearly here, cease stealing (present active imperative with mēketi).
The thing that is good (to agathon). “The good thing” opposed to his stealing and “with his hands” (tais chersin, instrumental case) that did the stealing. See note on 2Th 3:10. Even unemployment is no excuse for stealing.
To give (metadidonai). Present active infinitive of metadidōmi, to share with one.