The great problem (to be solved) of Penal Substitution Theory is how God can deal with human sin and yet still justify men without making God unjust. Man has disobeyed God, treating God as if He were man’s equal….or worse….by elevating man’s will over God’s. Man has treated God as unholy and this is an eternal offense because God is an eternally holy and just God.
The great solution of Penal Substitution is that God Himself became man in order to take upon Himself the punishment due mankind. This way God fulfills the requirements of divine justice by punishing Christ (essentially by punishing Himself….as Y1 says – God punching Himself) for man’s disobedience. Having expended his wrath God is free to forgive man (men to whom no more wrath is due).
The great reversal of Penal Substitution Theory is that God the Son is obedient to God the Father while God the Father treats God the Son as if He were unholy.
The great irony of Penal Substitution Theory is that in order to save men from their sins the Father effectively becomes the chief of sinners against the Son and unrighteous under His own law
There are two answers to this caricature, both of which I have given before.
The first is that Christ became His people's surety. This is someone who guarantees the debts of a friend or relative and must pay them in full if the friend defaults. There are several warnings in the Book of Proverbs against becoming a surety (Proverbs 6:1-5; 11:15; 17:18), since one is making the debts of one’s friend effectively one’s own, yet we read in Hebrews 7:22,
‘By so much more Jesus has become a surety of a better covenant.’
Christ is specifically designated in Scripture as
‘the last Adam’ (1 Corinthians 15:45) and we are told that the first Adam was a
‘type [or
‘figure’]
of Him who was to come’ (Romans 5:14).
‘For as in Adam all die, even so in Christ all shall be made alive’ (1 Corinthians 15:22). All those in Adam perish in their sins; all those in Christ are united to Him in His perfect righteousness.
Who are those ‘in Christ’? Those He came to save; those who were given to Him by the Father before time began. “Christ came not to strangers but to ‘brethren’ (Hebrews 2:11-13). He came here not to procure a people for Himself, but to secure a people already His” (A.W. Pink). There are many supporting texts for this, e.g. Matthew 1:21; John 6:39; 10:27-29; 17:2, 6; Ephesians 1:4. This is the second point: Christ is united federally to His people. They are
‘chosen in Christ’ (Ephesians 1:4),
‘Created in Christ’ (Ephesians 2:10);
‘circumcised in Him’ (Colossians 2:11) and
‘made the righteousness of God in Him' (2 Corinthians 5:21). And as Surety, the Lord Jesus must also pay the debt of His people, and if they are to be freed from their debt, He must pay the very last penny (Matthew 5:26). If you becomes a surety, say, for your child's mortgage, if the child defaults, his debt becomes yours, and although you may have been financially sound and trustworthy all your life, the bank will come after you, quite properly and legally, as if you are a debtor.
Christ was substituted for His people because He was and is one with them; identified with us sinners and we with Him; not merely as decreed by the sovereign authority of God , but as
covenanted between God the Father and God the Son. God's elect people were given to Christ under the terms of the everlasting covenant (e.g. Hebrews 2:13b), and He redeems them from their sins (e.g. John 6:39). Christ
'bore the sins of many' (Isaiah 53:12) because in His covenant identification with them, and because of His position as surety, their sins became sinlessly His.