Albert Barnes Commentary Daniel 9:5

"we have sinned, and have dealt perversely, and have done wickedly, and have rebelled, even turning aside from thy precepts and from thine ordinances;" — Daniel 9:5 (ASV)

We have sinned - Though Daniel was alone, he spoke in the name of the people in general - doubtless recounting the long series of crimes in the nation which had preceded the captivity, and which were the cause of the ruin of the city and temple.

And have committed iniquity ... - These varied forms of expression are designed to give “intensity” to what he says. It is equivalent to saying that they had sinned in every way possible. The mind, in a state of true repentance, dwells on its sins, and recounts the various forms in which iniquity has been done, and multiplies expressions of regret and sorrow on account of transgression.

From your precepts - Your commands; your laws.

Your judgments - Your laws - the word “judgments” in the Scripture denoting what God judges to be right for us to do, as well as what it is right for him to inflict.