Extended Strong's Greek Lexicon (Abbott-Smith based)
to advance
Usage: προ-βαίνω [in LXX chiefly for בּוֹא ;] to go forwards, go on, advance: Mat.4:21, Mrk.1:19. Metaphorical, of age (Gen.18:11, al., Lys., Diod., al.), ἐν τ. ἡμέραις, Luk.1:7, 18 2:36.† (AS)