4 That's the Day he'll take his stand on the Mount of Olives, facing Jerusalem from the east. The Mount of Olives will be split right down the middle, from east to west, leaving a wide valley. Half the mountain will shift north, the other half south. 5 Then you will run for your lives down the valley, your escape route that will take you all the way to Azal. You'll run for your lives, just as you ran on the day of the great earthquake in the days of Uzziah, king of Judah. Then my God will arrive and all the holy angels with him.
Matthew Henry's Commentary on Zechariah 14:4-5
Commentary on Zechariah 14:1-7
(Read Zechariah 14:1-7)
The Lord Jesus often stood upon the Mount of Olives when on earth. He ascended from thence to heaven, and then desolations and distresses came upon the Jewish nation. Such is the view taken of this figuratively; but many consider it as a notice of events yet unfulfilled, and that it relates to troubles of which we cannot now form a full idea. Every believer, being related to God as his God, may triumph in the expectation of Christ's coming in power, and speak of it with pleasure. During a long season, the state of the church would be deformed by sin; there would be a mixture of truth and error, of happiness and misery. Such is the experience of God's people, a mingled state of grace and corruption. But, when the season is at the worst, and most unpromising, the Lord will turn darkness into light; deliverance comes when God's people have done looking for it.