Isaiah 2:3

Shall go; shall not only have some weak desires of going, but shall be ready to take pains, and shall actually go. And say; such shall be their zeal, that they shall not only go themselves, but shall persuade and press others to go with them. We will walk in his paths; they show the truth of their conversion by their hearty desire to be structed in the way or method of worshipping and serving God acceptably, and by their firm purpose of practising the instructions given to them. For: this last clause contains the reason why the people should be so forward to go, and to invite others to go with them; and they may be the words either of the people, continuing their speech; or of the prophet, now returning to speak in his own name. The law; the new law, the doctrine of the gospel, which is frequently called a law, because it hath the nature and power of a law, obliging us no less to the belief and practice of it than the old law did. The word of the Lord from Jerusalem: for the accomplishment of this promise, see Luke 24:47 Acts 1:8 Romans 10:18.