3. Strengthen ye the weak hands. We might explain this passage generally, as if he had said, “Let those who have feeble hands strengthen them, let; them whose knees tremble and totter compose and invigorate their hearts.” But the following verse shews that the whole of this passage relates to the ministers of the word; for he addresses the teachers of the Church, and enjoins them to exhort, arouse, and encourage weak men whose hearts are broken or east down, that they may be rendered more firm and cheerful. This exhortation is seasonably introduced, because he saw that so many tokens of God’s anger, of which he had spoken, could not do otherwise than fill even the strongest minds with alarm and dread; for, seeing that we are always enfeebled by adversity, when God himself proclaims what may be called open war against us on account of our sins, who would not tremble? But the Prophet commands that they who are cast down and almost lifeless shall be enlivened, and the manner of doing it is explained by him in the following verse.