This verse gives the reason why Israel is thus strong and safe. In the parallel passage in Isaiah (Isaiah 2:5) it is converted into an injunction to the house of Jacob. All people will walk; rather, all nations walk. Everyone in the name of his god. "To walk" is generally used of moral and religious habits (e.g. 2 Chronicles 17:4; Psalms 89:31; Ezekiel 5:6, etc.); so here the meaning is that all other nations adhere to their false gods, and frame their life and conduct relying on the power and protection of these inanities, and, by implication, shall find their hope deceived. And we will walk in the name of the Lord our God. This is the secret of Israel's strength. The heathen can never prevail against the true believers who put their whole trust in the Lord, and live in union with him. By saying we, the prophet identifies himself with the faithful people. Forever and ever. The Church shall never fail. Heathen powers last for a time; the kingdom of Messiah is everlasting.
§ 5. In this promised restoration all Israel is included, if they choose to accept, the offer.