To do good (tēs eupoiias). Genitive case. Late compound from eupoios (eupoieō), common in Epictetus, but here only in N.T., a doing good.
To communicate (koinōnias). Genitive case. See 2Co 9:13 for use for contribution, beneficence. Moffatt notes that the three great definitions of worship and religious service in the N.T. (here, Rom 12:1.; Jam 1:27) are all inward and ethical.
Forget not (mē epilanthanesthe). Prohibition with mē and the present middle imperative of epilanthanō (Heb 6:10; Heb 13:2). Here with the genitive case.
Is well pleased (euaresteitai). Present passive indicative of euaresteō (Heb 11:5). With the associative instrumental case thusiais (sacrifices).