To offer on the altar that which is wholly unkosher is, points out the Abrabarnel, a strange thing to do. And yet one finds that the blood and suet fats – both forbidden for human consumption – are key parts of the sacrificial service. Quoting Isaiah 1:18 “If your offenses be like scarlet, like snow shall they turn white. If they be red as dyed cloth, they shall become like pure wool.” He suggests that the red blood represents our sins and the white fat God’s forgiveness that cleanses us. When we admit and confess our sins to God – presenting them on God’s altar – is what allows forgiveness to come forth.