Will I turn to the people (peoples) a pure language (lip). When his judgments have done their work, God will bring the heathen to the knowledge of him. He will purify their lips, which have been polluted with the names of idols and the worship offered to false gods (Psalms 16:4; Hosea 2:17); the confusion of Babel shall be done away, and all shall speak the language of faith in one God.
This, of course, points to Messianic times. For "pure lip," the Vulgate has, labium electum; the LXX; by a mistake of a letter (bhedurah for bherurah), γλῶσσαν εἰς γενεὰν αὐτῆς (so. γῆς), "a tongue for her generation."
With one consent; literally, with one shoulder; ὑπὸ ζυγὸν ἕνα, "under one yoke"; humero uno (Vulgate). The metaphor implies that all will help to carry the same burden, and to accomplish the same work, bearing the gospel throughout the world, and being all of one mind in the service of Jehovah (Jeremiah 32:39; Isaiah 19:23, Isaiah 19:24; Revelation 11:15).