Sin offerings in the Old Testament were the way that people dealt with the corrupting and pervasive problem of sin in the human heart. They involved the death of an animal and foreshadowed the death of Jesus Christ as a sin offering for all of humanity. Christ’s death puts us right with God, once and for all, and put an end to all the animal sacrifices that used to be made.
Now, our sacrifices are offered freely with thanksgiving, with acknowledgment of Christ’s once-and-for-all sacrifice on the cross. Heb 13:15-16 says, ‘Through Jesus, therefore, let us continually offer to God a sacrifice of praise—the fruit of lips that openly profess his name. And do not forget to do good and to share with others, for with such sacrifices God is pleased.’ These are the sacrifices God wants from us today.