God is just in justifying sinners because He fulfills His justice through Jesus Christ, who paid the penalty for sin.
God's justice in justifying sinners is a profound mystery that is central to the gospel. According to Romans 3:26, God demonstrates His righteousness by justifying those who have faith in Jesus. This means that Jesus, being both fully God and fully man, satisfied the demands of divine justice by His perfect sacrifice. He bore the sins of His people on the cross, thereby upholding God's justice while extending mercy. This is captured in Isaiah 9:6-7, where the promised child fulfills the commitment of salvation, ensuring that God's holiness is not compromised while offering justification freely to the elect.
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