I. They are invited to look unto Christ, and flee unto him as their city of refuge (v. 12): Turn you to the strong-hold, you prisoners of hope. The Jews that had returned out of captivity into their own land were yet, in effect, but prisoners (We are servants this day, Neh. ix. 36), yet prisoners of hope, or expectation, for God had given them a little reviving in their bondage, Ezra ix. 8, 9. Those that yet continued in Babylon, detained by their affairs there, yet lived in hope some time or other to see their own land again. Now both these are directed to turn their eyes upon the Messiah, set before them in the promise as their strong-hold, to shelter themselves in him, and stay themselves upon him, for the perfecting of the mercy which by his grace, and for his sake, was so gloriously begun. Look unto him, and be you saved, Isa. xlv. 22. The promise of the Messiah was the strong-hold of the faithful long before his coming; they saw his day at a distance and were glad, and the believing expectation of the redemption in Jerusalem was long the support and consolation of Israel, Luke ii. 25, 38. They, in their dangers and distresses, were ready to turn towards this and the other creature for relief; but the prophets directed them still to turn to Christ, and to comfort themselves with the joy of their king coming to them with salvation. But, as their deliverance was typical of our redemption by Christ (v. 11), so this invitation to the strong-hold speaks the language of the gospel-call. Sinners are prisoners, but they are prisoners of hope; their case is sad, but it is not desperate; yet now there is hope in Israel concerning them. Christ is a strong-hold for them, a strong tower, in whom they may be safe and quiet from the fear of the wrath of God, the curse of the law, and the assaults of their spiritual enemies. To him they must turn by a lively faith; to him they must flee, and trust in his name.