The Greek word is found here only. It is questioned whether it means 'sympathizing grief' (as LXX, Ps. 69.20;) or 'deep grief.' There is, I apprehend, sorrow for, with an intensive force in it; not sympathy, which is feeling with, but feeling what a state they were in, with grief for it.
The word is used also for a council, Acts 25.12. It may be more in this sense here, but a private one.
The mountain in contrast with the plain: see Note, Matt. 5.1.