The practice of presenting an offering to the Lord reveals that no one can approach a holy God without a substitutionary animal to make atonement. Blood is a graphic representation of life. Due to the nature of human sin, atonement had to be made in exchange for any worshipper to draw near to God.
2 Parle aux enfants d'Israël, et dis-leur: Lorsque quelqu'un d'entre vous fera une offrande à l'Eternel, il offrira du bétail, du gros ou du menu bétail.