The cross work of Christ is not just a payment for the wages of sin, but it is man’s means for cleansing from and victory over sin and death. In essence, that is the doctrine of penal substitution. The doctrine of penal substitution is one of the glorious truth’s of the Bible.
First, the doctrine of penal substitution is biblical.
From beginning to end penal substitution is central to the message of the Bible [cf. Genesis 9:6; Exodus 21:24; Leviticus 1:4; 17:11; Isaiah 53:5-6; Hebrews 9:22]. The truth that Jesus Christ satisfied the justice of God and took upon Himself the wrath due sin.
Second, penal substitution is necessary for real forgiveness.
God cannot waive the wrath due sin. It is out of line with His character to do so. He cannot sweep sin under the rug. Justice demands a consequence. Sin robs the bank of God’s justice [Psalm 97:2; Proverbs 17:15]. The only remedy is to seek forgiveness, but forgiveness always has a cost. Injustice must be made right. For my sin the cost was the death of Jesus Christ. My cost is that without Christ I cannot escape death. He made up what I owed. I sinned, but Jesus suffered for it so I would not have to suffer the hellish consequences of my sin.
Third, the fame of God’s name is at stake.
An injustice against God unpunished with would make the nature untrue. If it were not true He would be a liar. His name would be tarnished. In my place condemned Jesus hung pun the cross to demonstrate the justice of God. Therefore my response is to put faith in my Merciful Justifier Jesus Christ [Romans 3:25-26].
Fourth, God cannot be untrue to His Word.
God has said that the the soul that sins must die [Genesis 2:17; Ezekiel 18:20]. Since He declared it, it is decreed. Therefore, from the beginning of man’s sin God has provided a sacrifice. For Adam God sacrificed an animal to cloth his shame. For Cain and Abe;, God honored the righteous sacrifice. For Abraham God provided a substitute sacrifice in the place of his son [Genesis 22]. For the sins of Israel God atoned through the blood of animals. For my sin and yours God sent the Lamb of God, Jesus Christ, to the cross as my sins sacrifice.
Glory to God for the gift of penal substitution. May it humble us to the core and motivate us to serve Him for life.