John Calvin Commentary Isaiah 59:6

"Their webs shall not become garments, neither shall they cover themselves with their works: their works are works of iniquity, and the act of violence is in their hands." — Isaiah 59:6 (ASV)

Their webs shall not be for clothing. He repeats and confirms the same statement: that everything they attempt or undertake is always useless to mankind; because they purposely shrink from all acts of kindness. Now, it is an indication of a mind utterly abandoned to devote themselves to evil deeds in such a way that no advantage of any kind can be expected from the life of one who desires to be barren and destitute of all justice. Others explain it that they will toil unsuccessfully to acquire wealth and to rise to honor. But I consider the meaning to be simpler: that no one will cover himself with their works, because in their texture there is nothing solid or durable.

By various modes of expression he emphasizes the same thing, to demonstrate that their works yield no advantage whatever. But we were born for this purpose: that we should provide assistance to our neighbors and, in our turn, contribute something to the general good. Thus they are savage beasts and should not be called men, who are only skillful in doing mischief and labor with all their might to avoid doing good. He immediately adds, plainly, that they are given up and, as it were, devoted to iniquity.