IV. That they shall have liberty and opportunity to worship God in the ordinances of his own appointment, and shall have both invitations and inclinations to do so (v. 6): There shall be a day, and a glorious day it will be, when the watchmen upon Mount Ephraim, that are set to stand sentinel there, to give notice of the approach of the enemy, finding that all is very quiet and that there is no appearance of danger, shall desire for a time to be discharged from their post, that they may go up to Zion, to praise God for the public peace. Or the watchmen that tend the vineyards (spoken of v. 5) shall stir up themselves, and one another, and all their neighbours, to go and keep the solemn feasts at Jerusalem. Now this implies that the service of God shall be again set up in Zion, that there shall be a general resort to it, with much affection and mutual excitement, as in David's time, Ps. cxxii. 1. But that which is most observable here is that the watchmen of Ephraim are forward to promote the worship of God at Jerusalem, whereas formerly the watchman of Ephraim was hatred against the house of his God (Hos. ix. 8), and, in stead of inviting people to Zion, laid snares for those that set their faces thitherward, Hos. v. 1. Note, God can make those who have been enemies to religion and the true worship of God to become encouragers of them and leaders in them. This promise was to have its full accomplishment in the days of the Messiah, when the gospel should be preached to all these countries, and a general invitation thereby given into the church of Christ, of which Zion was a type.