1. It is promised that they shall return to their God first and then to their own land; and the promise of their conversion and reformation is that which makes way for all the other promises, v. 4, 5. (1.) They shall lament after the Lord (as the whole house of Israel did in Samuel's time, 1 Sam. vii. 2); they shall go weeping. These tears flow not from the sorrow of the world as those when they went into captivity, but from godly sorrow; they are tears of repentance for sin, tears of joy for the goodness of God, in the dawning of the day of their deliverance, which, for aught that appears, does more towards the bringing of them to mourn for sin than all the calamities of their captivity; that prevails to lead them to repentance when the other did not prevail to drive them to it. Note, It is a good sign that God is coming towards a people in ways of mercy when they begin to be tenderly affected under his hand. (2.) They shall enquire after the Lord; they shall not sink under their sorrows, but bestir themselves to find out comfort where it is to be had: They shall go weeping to seek the Lord their God. Those that seek the Lord must seek him sorrowing, as Christ's parents sought him, Luke ii. 48. And those that sorrow must seek the Lord, and then their sorrow shall soon be turned into joy, for he will be found of those that so seek him. They shall seek the Lord as their God, and shall now have no more to do with idols. When they shall hear that the idols of Babylon are confounded and broken it will be seasonable for them to enquire after their own God and to return to him who lives for ever. Therefore men are deceived in false gods, that they may depend on the true God only. (3.) They shall think of returning to their own country again; they shall think of it not only as a mercy, but as a duty, because there only is the holy hill of Zion, on which once stood the house of the Lord their God (v. 5): They shall ask the way to Zion with their faces thitherward. Zion was the city of their solemnities; they often thought of it in the depth of their captivity (Ps. cxxxvii. 1); but, now that the ruin of Babylon gave them some hopes of a release, they talk of nothing else but of going back to Zion. Their hearts were upon it before, and now they set their faces thitherward. They long to be there; they set out for Zion, and resolve not to take up short of it. The journey is long and they know not the road, but they will ask the way, for they will press forward till they come to Zion; and, as they are determined not to turn back, so they are in care not to miss the way. This represents the return of poor souls to God. Heaven is the Zion they aim at as their end; on this they have set their hearts; towards this they have set their faces, and therefore they ask the way thither. They do not ask the way to heaven and set their faces towards the world; nor set their faces towards heaven and go on at a venture without asking the way. But in all true converts there are both a sincere desire to attain the end and a constant care to keep in the way; and a blessed sight it is to see people thus asking the way to heaven with their faces thitherward. (4.) They shall renew their covenant to walk with God more closely for the future: Come, and let us join ourselves to the Lord in a perpetual covenant. They had broken covenant with God, had in effect separated themselves from him, but now they resolve to join themselves to him again, by engaging themselves afresh to be his. Thus, when backsliders return, they must do their first works, must renew the covenant they first made; and it must be a perpetual covenant, that must never be broken; and, in order to that, must never be forgotten; for a due remembrance of it will be the means of a due observance of it.