7. εἴτε διακονίαν κ.Ï„.λ. Sc. ὦμεν; cf. 1Ti 4:15, á¼Î½ τοÏτοις ἴσθι; so with the next two clauses, thoroughness and devotion are insisted upon.
διακονίαν. The widest word for service, including the functions of apostles, prophets, etc., but here probably of personal service in the community; cf. Phoebe Rom 16:1. á¼Î½ τῇ διακ., the special way of serving given to each.
ὠδιδάσκων. The change of form probably merely the result of instinctive literary feeling. The teacher is distinguished from the prophet (Act 13:1; 1Co 12:28; Eph 4:11) perhaps as expounding, elucidating and systematically imparting truth rather than discovering and declaring it. It is of course a distinction of functions not of persons. See above, Rom 12:6.
á¼Î½ τῇ διδασκαλίᾳ. Cf. 1Ti 4:13; 1Ti 4:16. The act or practice of teaching, not the thing taught (so generally in the Pastoral Epp.).