The travel note in 13:22 (cf. Luke 17:11) suggests a major break here in the text. Luke introduces more instructions for disciples, focusing on the salvation available for the humble (13:22–15:32). But the divisions of the text are rather difficult at this point and somewhat arbitrary. A question about the number of people who will be saved (13:23) becomes the occasion for Jesus’s instruction (13:22–30). Jesus does not answer the question …
Baker Publishing Group, The Baker Illustrated Bible Commentary, by Gary M. Burge