Adam Clarke on Isaiah 59:4

They conceive mischief, and bring forth iniquity - There is a curious propriety in this mode of expression; a thought or purpose is compared to conception; a word or act, which is the consequence of it, to the birth of a child. From the third to the fifteenth verse inclusive may be considered a true statement of the then moral state of the Jewish people; and that they were, in the most proper sense of the word, guilty of the iniquities with which they are charged.