'Sin' in the Bible

Therefore, O king, let my advice be acceptable [to you] and your sin remove with righteousness and your iniquity with having mercy on [the] oppressed, {in case there might be a prolongation of your prosperity}.'"

Now I [was] still speaking and praying, and confessing my sin and the sin of my people Israel, and presenting my plea {before} Yahweh my God, on behalf {of the holy mountain of my God}.

"Seventy weeks is decreed for your people and {for your holy city}, to put an end to the transgression and to seal [up] sin and to make atonement for guilt and to bring [in] everlasting righteousness and to seal vision and prophet and to anoint {the most holy place}.