Commentary on Isaiah Volume 2 John Calvin
COMMENTARY ON ISAIAH
as if during the rest of the time they were at liberty to gormandize; while they think that the flesh is unclean, and yet allow every kind of indulgence to it; provided only that they do not once gormandize on a fastday, they think that they have discharged their duty admirably well. Since therefore there is nothing in them that can be approved, we may absolutely condemn them.
But the dispute on this occasion was different. That fasting which the Jews observed was laudable in itself, because God had appointed it; but a false opinion respecting it was censurable. Among the Papists, on the other hand, we must condemn both the false opinion and the institution itself; because it is wicked. The Papists have this in common with the Jews, that they think that they serve God by it, and that it is a meritorious work. Yet fasting is not the worship of God, and is not in itself commanded by him, in the same manner as those works which he enjoins in the Law; but it is an external exercise, which is auxiliary to prayer, or is useful for subduing the flesh, or testifying our humiliation, when, as guilty persons, we implore that the wrath of God may be turned away in adversity. But the reader will find the use and design of fasting more fully discussed in our Institutes. (Book 4, chapter 12:1521)
5. Is it such a fast as I have chosen? He confirms the preceding statement, and shows that fasting is neither desired nor approved by God in itself, but so far as it is directed to its true end. He did not wish that it should be altogether abolished, but the improper use of it; that is, because they believed the worship of God to consist in it, and by neglecting or even despising true godliness, thought that bodily exercise was enough; just as hypocrites always put forward external ceremonies, as if they were satisfactions to appease God.
Again, because men, through their rashness, define what is the worship of God, he expressly refers us to his own will, that we may not suppose that he approves of everything which our own judgment pronounces to be right. Although men are well pleased with themselves, and swell with astonishing haughtiness, and indulge in insolent boasting, the Lord rejects and abhors them, because he claims for himself alone the right to "choose." Now, "to choose" a thing is of the same import as "to take pleasure in it."
And hanging his head like a bulrush. He says that he is not delighted if a man passes a day in hunger, and then walks with a sad and downcast look. The Prophet employs all appropriate metaphor; because the bulrush, though it is straight, is easily bent. So hypocrites bend themselves, and bow down the head, as if under the influence of oppressive leanness, or display some empty appearance of humility. The Prophet therefore intended to censure superstitious attitudes, in which hypocrites imagine that there is some holiness.
And spread sackcloth and ashes. These things also were added to fasting, especially when they made solemn professions of repentance; for they clothed