How do we know Christ's sacrifice was necessary?

The necessity of Christ's sacrifice is rooted in God’s nature as both just and loving. As the sinless Lamb of God, Jesus bore the wrath of God against sin, fulfilling the requirements of divine justice while displaying God’s immense love for His people. John 3:16 articulates this balance: God provided His only begotten Son to enable those who believe in Him to have eternal life. Furthermore, Romans 3:23-26 underscores that all have sinned and fall short of God's glory, hence the penalty of sin is death (Romans 6:23). Jesus' sacrificial death satisfies the wrath of God, allowing believers to be justified through faith. This divine provision is essential so that God can be both just, dealing appropriately with sin, and the justifier of those who believe in Christ.