43. For the days shall come upon thee. He now assumes, as it were, the character of a judge, and addresses Jerusalem with greater severity. In like manner the prophets also, though they shed tears over the destruction of those about whom they ought to feel anxiety, yet they summon up courage to pronounce severe threatenings, because they know that not only are they commanded to watch over the salvation of men, but that they have also been appointed to be the heralds of the judgment of God. Under these terms Jesus declares that Jerusalem will suffer dreadful punishment, because she did not know the time of her visitation; that is, because she despised the Redeemer who had been exhibited to her, and did not embrace his grace. Let the fearful nature of the punishments which she endured now alarm us, that we may not, by our carelessness, extinguish the light of salvation, but may be careful to receive the grace of God, and may even run with rigor to meet it.