Amos 7:8

But that which follows has an important meaning: God asks his Prophet, What sees thou, Amos? It is probable that the Prophet was astonished at a thing so mysterious. When locusts were formed, and when there was a contention by fire, he might have easily gathered what God meant; for these visions were by no means ambiguous: but when God stood on a wall with a plumbline, this was somewhat more hard to be understood; and the probability is, that the Prophet was made to feel much astonishment, that the people might be more attentive to hear his vision, as we commonly apply our thoughts more to hidden things; for we coldly attend to what we think to be easily understood; but mysteriousness, or something difficult to be known, sharpens our minds and attention. I do not then doubt but that God made the Prophet for a time to feel amazed, with the view of increasing the attention of the people. What then dost thou see, Amos? A plumbline, he says: but, at the same time, he knew not what was the meaning of this plumbline, or what was its design. Then God answers, Behold, I set a plumbline in the midst of my people; that is, I fix this to be the last rule, or the final measure, and I will not add any more to pass by them As God had twice leaped over the bounds of his judgment by sparing them, he says, now that the last end was come, “I will proceed no farther,” he says, “in forgiving them: as when a wall is formed to the plumbline, that no part may, in the least, exceed another, but that there may be regularity throughout so also this shall be the last order; this measuring shall be true and just. I will pass by them no more.” This, I have no doubt, is the real meaning of the Prophet. We now also perceive the design of the other two visions to have been to prevent the Israelites from deceiving themselves by false self-flatteries, because God was kind and favorable to them. He shows that he dealt so with them, not because they were just; for God had already begun to execute his judgments on them; and the punishments with which they had been visited were strong evidences of their crimes: for God is not without reasons angry with men, especially with his chosen people. Since then they had been already smitten once and again, the Prophet proves that they were worthy of heavier punishments; and that punishments had been mild and moderated, was to be ascribed, he says, to the indulgence of God, because he was willing to forgive his people; but that the time had now come when he would no longer pardon them; for he saw that he had to do with irreclaimable obstinacy. This is the meaning.