Should unintentional sins even count? Often in our current context we tend to give passes for bad things that happen if the person who did them didn't mean to. However, this was not the case in ancient Israel. The point God wants to make to His people by asking for a sin or purification offering is that He takes their error or uncleanness seriously. His people were to be set apart to be images to the world of His glory and that glory could not be tarnished. Thankfully today although we still bear the image of God to the world, Jesus' blood has given us a permanent cleansing before God.