O Jerusalem ... - See the notes at Luke 19:41-42.
Would I have gathered - Would have protected and saved.
Thy children - Thy people.
Related Commentaries of Matthew 23:37
Matthew 23:37
37 O Jerusalem, Jerusalem, thou that killest the prophets, and stonest them which are sent unto thee, how often would I have gathered thy children together, even as a hen gathereth her chickens under her wings, and ye would not!