'Sin' in the Bible

"While I was still speaking in prayer, confessing my sin and the sin of my people Israel and placing my request in the presence of the LORD my God on behalf of the holy mountain of God

Seventy weeks have been decreed concerning your people and your holy city: to restrain transgression, to put an end to sin, to make atonement for lawlessness, to establish everlasting righteousness, to conclude vision and prophecy, and to anoint the Most Holy Place.