How do we know that Christ's sacrifice justifies the ungodly?

The concept of justification by Christ is rooted in the historical act of Jesus' sacrifice, as highlighted in Romans and referenced in 1 Peter 3:18. The just suffered for the unjust, meaning that Jesus, who had no sin, willingly took on the sins of His people. The justice of God was satisfied when He poured out His wrath on Christ, making it possible for God to justify those who believe. Acts 2:23 further emphasizes that this act was predetermined by God's foreknowledge, affirming the sovereignty and justice of God in salvation. Therefore, through faith in Christ’s atonement, the ungodly are declared righteous before God.