But they shall sit every man under his vine and under his fig tree; and none shall make them afraid: for the mouth of the LORD of hosts hath spoken it.
But they shall sit every man under his vine ... - i:e., enjoy the most prosperous tranquillity (1 Kings 4:25, "Judah and Israel dwelt safely, every man under his vine and under his fig tree ... all the days of Solomon" - type of the true Solomon, the Prince of Peace; Zechariah 3:10). The vine and fig tree are mentioned rather than a house, to signify there will be no need of a covert; men will be safe even in the fields and open air.
For the mouth of the Lord of hosts hath spoken it - therefore it must come to pass, however unlikely now it may seem.