10 The Lord hath made bare His holy arm in the eyes of all the nations; and all the ends of the earth shall see the salvation of our God.
11 Depart ye, depart ye, go ye out from thence, touch no unclean thing; go ye out of the midst of her; be ye clean, that bear the vessels of the Lord.
12 For ye shall not go out with haste, nor go by flight: for the Lord will go before you; and the God of Israel will be your rereward.
Verse 10: Baring His holy arm is an expression of showing His power to all nations. It is a term meaning preparation for active work, especially for war. Oriental custom permitted the arm to be made bare in an instant; the sleeve was so free that one hand passing up the arm would lay it bare immediately.
All the ends of the earth: Only a small part of mankind has seen the reality of God’s salvation. Many millions on earth have yet to hear of the gospel. In the Millennium, the earth for the first time, will be filled with the knowledge of God.
Verse 11: This verse speaks of the Israelites’ return from the Babylonian captivity as well as the return of all Jews to Israel in the Millenium. It was an admonishment that they were to leave all idols and anything else that spoke of idolatry. They were not to touch any unclean thing. Those who bore the vessels of God were to be ceremonially clean before they touched those vessels. It was a holy mission to take these items back to Jerusalem
Verse 12: They were not going to be running away from Babylon. They would be leaving with the King’s blessing, so there was no need for haste. God would go before them and behind them, both leading and protecting. Rereward is the obsolete spelling of rearward (in the archaic and historical military sense of rearguard). God was their leader and their protector.