Luke 21:20

“And when ye shall see Jerusalem compassed with armies, etc.] The Vulgate Latin, Syriac, and Persic versions read, “with an army”; that is, with the Roman army, as it was by the army which Titus Vespasian brought against it, and besieged it with: then know that the desolation thereof is nigh; signifying, that there would be no deliverance to be expected, as when the Assyrian army under Rabshakeh appeared against it; but that whenever the Roman army besieged it, its destruction might be looked upon as inevitable; nor was the siege raised until it was destroyed, which was about four years after.”

“by armies--encamped armies, that is, besieged: "the abomination of desolation" (meaning the Roman ensigns, as the symbols of an idolatrous, pagan, unclean power) "spoken of by Daniel the prophet" (Dan 9:27) "standing where it ought not" (Mar 13:14). "Whoso readeth [that prophecy] let him understand" (Mat 24:15). Then . . . flee, &c.--EUSEBIUS says the Christians fled to Pella, at the north extremity of Perea, being "prophetically directed"; perhaps by some prophetic intimation still more explicit than this, which still would be their chart.”

“The account of the destruction of Jerusalem contained in this chapter has been fully considered in the notes at Matthew 24:0. All that will be necessary here will be an explanation of a few words that did not occur in that chapter. Luke 21:9 Commotions - Insurrections. Subjects rising against their rulers. Luke 21:11 Fearful sights - See Matthew 24:7. Luke 21:12, Luke 21:13 Synagogues, and into prisons - See the notes at Mark 13:9-10. Luke 21:14 Settle it, therefore, in your hearts - Fix it firmly in your minds - so firmly as to become a settled principle - that you are always to depend on God for aid in all your trials. See Mark 13:11. Luke 21:15 A mouth - Eloquence, ability to speak as the…”

“21:20-24 Jesus was describing the siege and destruction of Jerusalem that would take place in AD 70.”

“Luk 21:7, Luk 19:43; Dan 9:27; Mat 24:15; Mar 13:14 Luke 21:21”