Matthew Poole and continuators on Isaiah 59:12

12 For our transgressions are multiplied before thee , and our sins testifie against us: for our transgressions are with us , and as for our iniquities we know them :

The word here signifies sins of an high nature, such as wherein there is much of Mans Will against Light, Rebellious Sins.

q. d. They admit of no excuse; for they are stain before thee, and multiplied against thee, whereby thou art justly provoked to deny us all help.

Every sin that is charged upon us is like so many Witnesses produced to prove the guilt of our Consciences; or, as the Hebrew word, do answer, and so some make it an elegant Metaphorical Allusion to the Eccho, which, as it returns the voice again, so those Judgments they cry out of, are but the meritorious Repercussion of their sins: They had been cruel to others, neither had they executed Judgment, and Justice, and here they suffer all kind of cruelties, and Indignities from the Chaldaeans, as the true and just representation or Eccho of their own works; See a personal instance in Adoni-bezek, Iudg. 1. 6, 7.

i. e. We he under the guilt of them, they are a burden to us, God hath not yet forgiven them.

We are convinced of them, our guilty Consciences must own and acknowledge them, Psal. 51. 3. It notes either their Conviction, or Sorrow, or both, See Ier. 14. 7. Or, we know what are those sins thou art so angry with us for: and this is favoured by the sequel, where they seem to particularize those sins in the following verses.