4. What the case was which they desired satisfaction in (v. 3): Should I weep in the fifth month, separating myself, as I have done these so many years. Observe, (1.) What had been their past practice, not only during the seventy years of the captivity but to this time, which was twenty years after the liberty proclaimed them; they kept up solemn stated fasts for humiliation and prayer, which they religiously observed, according as their opportunities were, in their closets, families, or such assemblies for worship as they had. In the case here, they mention only one, that of the fifth month; but it appears, by ch. viii. 19, that they observed four anniversary fasts, one in the fourth month (June 17), in remembrance of the breaking up of the wall of Jerusalem (Jer. lii. 6), another in the fifth month (July 4), in remembrance of the burning of the temple (Jer. lii. 12, 13), another in the seventh month (September 3), in remembrance of the killing of Gedaliah, which completed their dispersion, and another in the tenth month (December 10), in remembrance of the beginning of the siege of Jerusalem, 2 Kings xxv. 1. Now it was very commendable in them to keep those fasts, thus to humble themselves under those humbling providences, by which God called them to weeping and mourning, thus to accommodate themselves to their troubles, and prepare themselves for deliverance. It would likewise be a means of possessing their children betimes with a due sense of the hand of the Lord gone out against them. (2.) What was their present doubt-whether they should continue these fasts or no. The case is put as by a single person: Should I weep? But it was the case of many, and the satisfaction of one would be a satisfaction to the rest. Or perhaps many had left it off, but the querist will not be determined by the practice of others; if God will have him continue it, he will, whatever others do. His fasting is described by his weeping, separating himself. A religious fast must be solemnized, not only by abstinence, here called a separating ourselves from the ordinary lawful comforts of life, but by a godly sorrow for sin, here expressed by weeping. "Should I still keep such days to afflict the soul as I have done these so many years?" It is said (v. 5) to be seventy years, computed from the last captivity, as before, ch. i. 12. The enquiry intimates a readiness to continue it, if God so appoint, though it be a mortification to the flesh. [1.] Something is to be said for the continuance of these fasts. Fasting and praying are good work at any time, and do good; we have always both cause enough and need enough to humble ourselves before God. To throw off these fasts would be an evidence of their being too secure, and a cause of their being more so. They were still in distress, and under the tokens of God's displeasure; and it is unwise for the patient to break off his course of physic while he is sensible of such remains of his distemper. But, [2.] There is something to be said for the letting fall of these fasts. God had changed the method of his providences concerning them, and returned in ways of mercy to them; and ought not they then to change the method of their duties? Now that the bridegroom has returned, why should the children of the bride-chamber fast? Every thing is beautiful in its season. And as to the fast of the fifth month (which is that they particularly enquire about), that, being kept in remembrance of the burning of the temple, might seem to be superseded rather than any of the other, because the temple was now in a fair way to be rebuilt. But, having long kept up this fast, they would not leave it off without advice, and without asking and knowing God's mind in the case. Note, A good method of religious services, which we have found beneficial to ourselves and others, ought not to be altered without good reason, and therefore not without mature deliberation.