Therefore this iniquity - That is, this refusing to trust in Yahweh, and this intention to seek the alliance of Egypt. The general sense of the figure here is, that their depending on Egypt would involve them ultimately in complete and awful ruin - ruin that should come upon them as suddenly as when a wall that had been long swelling out gives way.

As a breach ready to fall - Like a breaking forth, or a bursting in a wall.

Swelling out in a high wall - That is, where the foundation is not firm, and where one part of the wall sinks, and it inclines to one side until it suddenly bursts forth. A similar figure is used by the Psalmist Psalm 62:3 :

Ye shall be slain all of you

As a bowing wall shall ye be, and as a tottering fence.

Whose breaking cometh suddenly - Though it has been long leaning and swelling, yet the actual bursting forth would be in an instant. So would it be with the destruction that would come upon the Jews. Though by their sins they had been long preparing for it, yet it would come upon them by a sudden and tremendous crash. So it will be with all sinners. Destruction may seem to be long delayed - as a wall may be long inclining, and may seem to prepare imperceptibly to fall; but in due time it will come suddenly upon them, when too late to obtain relief.

Swelling out to a high wall "A swelling in a high wall" - It has been observed before, that the buildings of Asia generally consist of little better than what we call mud walls. "All the houses at Ispahan, "says Thevenot, Vol. II., p. 159, "are built of bricks made of clay and straw, and dried in the sun; and covered with a plaster made of a fine white stone. In other places in Persia the houses are built with nothing else but such bricks, made with tempered clay and chopped straw, well mingled together, and dried in the sun, and then used: but the least rain dissolves them. "Sir John Chardin's MS. remark on this place of Isaiah is very apposite: Murs en Asie etant faits de terre se fendent ainsi par milieu et de haut en bas. "The walls in Asia being made of earth often cleave from top to bottom." This shouts clearly how obvious and expressive the image is. The psalmist has in the same manner made use of it, to express sudden and utter destruction: -

"Ye shall be slain all of you;

Ye shall be like an inclining wall, like a shattered fence."

Therefore this iniquity shall be to you as a breach ready to fall,.... Or, "as a falling breach" (m); contempt of the word of God, and trusting in wickedness, rejecting the counsel of God, and placing confidence in the creature, these would be the cause of ruin; which ruin is signified by the breach of a falling wall, or by a breach in a wall, by reason of which it is in danger of falling, and is just ready to fall:

swelling out in a high wall; like a wall that bellies out and bulges, and which, when it once begins to do, suddenly falls; and the higher it is, it comes with more force, and the greater is the fall:

whose breaking cometh suddenly, at an instant; and so it is suggested, should be the ruin of this people; the high towering confidence they had in Egypt would fall with its own weight, and they with it, and be broken to pieces in a moment; and which is further illustrated by another simile.

(m) "sicut ruptura cadens", Montanus, Cocceius, De Dieu. Ben Melech observes, that a breach is after the building is fallen; for the breach does not fall, but it is said on account of the end of it, or what it is at last, as in Isaiah 47.2. "grind meal" or "flour".

Therefore this iniquity shall be to you as a breach ready to fall, swelling out in a high wall, whose breaking cometh suddenly at an instant.

30:13 This iniquity - Of trusting to Egypt, shall be like a wall which is high, but swelling forth in some parts, which, upon the least accident, falls down suddenly.

13. Image from a curve swelling out in a wall (Ps 62:3); when the former gives way, it causes the downfall of the whole wall; so their policy as to Egypt.

30:8-18 The Jews were the only professing people God then had in the world, yet many among them were rebellious. They had the light, but they loved darkness rather. The prophets checked them in their sinful pursuits, so that they could not proceed without fear; this they took amiss. But faithful ministers will not be driven from seeking to awaken sinners. God is the Holy One of Israel, and so they shall find him. They did not like to hear of his holy commandments and his hatred of sin; they desired that they might no more be reminded of these things. But as they despised the word of God, their sins undermined their safety. Their state would be dashed in pieces like a potter's vessel. Let us return from our evil ways, and settle in the way of duty; that is the way to be saved. Would we be strengthened, it must be in quietness and in confidence, keeping peace in our own minds, and relying upon God. They think themselves wiser than God; but the project by which they thought to save themselves was their ruin. Only here and there one shall escape, as a warning to others. If men will not repent, turn to God, and seek happiness in his favour and service, their desires will but hasten their ruin. Those who make God alone their confidence, will have comfort. God ever waits to be gracious to all that come to him by faith in Christ, and happy are those who wait for him.