4. The punishment of their security. It shall be their ruin; and it will be, (1.) A complete ruin, the ruin of all their comforts and confidences: "These two things shall come upon thee (the very two things that thou didst set at defiance), loss of children and widowhood, v. 9. Both thy princes and thy people shall be cut off, so that thou shalt be no more a government, no more a nation." Note, God often brings upon secure sinners those very mischiefs which they least feared and thought themselves in least danger of. "They shall come upon thee in their perfection, with all their aggravating circumstances and without any thing to allay or mitigate them." Afflictions to God's children are not afflictions in perfection. Widowhood is not to them a calamity in perfection, for they have this to comfort themselves with, that their Maker is their husband; loss of children is not, for he is better to them than ten sons. But on his enemies they come in perfection. Widowhood and loss of children are either of them great griefs, but both together great indeed. Naomi thinks she may well be called Marah when she is left both of her sons and of her husband (Ruth i. 5); and yet on her these evils did not come in perfection, for she had two daughters-in-law left, that were comforts to her. But on Babylon they come in perfection; she has no comfort remaining. (2.) It will be a sudden and surprising ruin. The evil shall come in one day, nay, in a moment, which will make it much the more terrible, especially to those that were so very secure. "Evil shall come upon thee (v. 11) and thou shalt have neither time nor way to provide against it, or to prepare for it; for thou shalt not know whence it rises, and therefore shalt not know where to stand upon thy guard." Thou shalt not know the morning thereof; so the Hebrew phrase is. We know just when and where the day will break and the sun rise, but we know not what the day, when it comes, will bring forth, nor when or where trouble will arise; perhaps the storm may come from that point of the compass which we little thought of. Babylon pretended to great wisdom and knowledge (v. 10), but with all her knowledge she cannot foresee, nor with all her wisdom prevent, the ruin threatened: "Desolation shall come upon thee suddenly, as a thief in the night, which thou shalt not know, that is, which thou little thoughtest of." Fair warning was indeed given them, by Isaiah and other prophets of the Lord, of this desolation; but they slighted that notice, and would give no credit to it, and therefore justly is it so ordered that they should have no other notice of it, but that partly through their own security, and partly through the swiftness and subtlety of the enemy, when it came it should be a perfect surprise to them. Those that slight the warnings of the written word, let them not expect any other premonitions. (3.) It will be an irresistible ruin, and such as they will have no fence against: "Mischief shall come upon thee so suddenly that thou shalt have no time to turn thee in, so strongly that thou shalt not be able to make head against it and to put it off and save thyself." There is no opposing the judgments of God when they come with commission. Babylon herself, with all her wealth, and power, and multitude, is not able to put off the mischief that comes.