Strong's Greek #1616
ἐκτενείᾳ

Englishman's Concordance (References)

ἐκτενείᾳ ekteneia — 1 Occurrence

Acts 26:7 - N-DFS
GRK:ἡμῶν ἐν ἐκτενείᾳ νύκτα καὶ
INT: of us in earnestness night and