God requires blood for atonement due to His holiness and justice, which demand a sacrifice for sin.
The requirement of blood for atonement is rooted in God's holy and just nature. Leviticus 17:11 explains that life is in the blood and that it is given on the altar for atonement of the soul. This principle emphasizes that sin incurs a debt that must be satisfied, and blood represents the life given as a payment for that debt. For God to remain just while justifying the sinner, there must be a sacrificial offering, and the blood of Christ fulfills that requirement perfectly. Romans 3:26 illustrates this balance of God's justice and mercy, demonstrating that through the blood of Christ, God can justly forgive the sins of the elect, meeting the demands of His righteousness.
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