εἰσ-ακούω
[in LXX chiefly for שָׁמַע, also for עָנָה, etc.;]
to listen to, in two senses;
(a) to obey: I Co 14:21 (cf. De 1:43, Si 3:6)
(b) to listen, assent to; pass., to be heard: of persons praying, Mt 6:7, He 5:7; of the prayer offered, Lk 1:13, Ac 10:31 (cf. Ps 4:2, Si 34:26); v. Cremer, 624).†