Roman Catholicism

Papal authority and infallibility - the Pope as Peter's successor, supreme visible head of the Church, able to teach infallibly when he defines a doctrine of faith or morals ex cathedra.

Their basis
Jesus renames Simon 'Peter' (rock) and says 'on this rock I will build my church... I will give you the keys of the kingdom' (Matt 16:18-19); 'Feed my sheep' (John 21:15-17); 'strengthen your brothers' (Luke 22:32). They hold Peter was first Bishop of Rome and passed this office to an unbroken line of successors; Vatican I (1870) defined papal infallibility for ex cathedra pronouncements.

Scripture answers
Scripture makes Christ Himself the one foundation and cornerstone, and Peter points to Christ, not himself, as the living Stone; the 'binding and loosing' authority is given to the whole church, not one man. Peter calls himself a fellow-elder, is publicly corrected by Paul, and at the Jerusalem council speaks but does not rule - James pronounces the judgment. There is one mediator between God and men, the man Christ Jesus, and no supreme earthly head appears.

1 Corinthians 3:11Ephesians 2:201 Peter 2:4-7Matthew 18:181 Peter 5:1Galatians 2:11-14Acts 15:13-191 Timothy 2:5Matthew 23:8-10

In fairness: Peter genuinely held a leading role among the Twelve - first-listed, spokesman, first to preach at Pentecost, given the keys - so a real Petrine prominence is not invented. And Rome's continuity has, in God's providence, helped preserve the canon, the creeds, and the faith through many centuries.

Marian dogmas and devotion - Mary as Mother of God, ever-virgin, immaculately conceived (preserved from original sin) and sinless, bodily assumed into heaven, Queen of Heaven, and heard as an intercessor to whom the faithful pray.

Their basis
The angel greets her as 'full of grace' (Luke 1:28); 'all generations will call me blessed' (Luke 1:48); at the cross Jesus gives her as mother to the beloved disciple (John 19:26-27). Catholics carefully distinguish the high honor (veneration, dulia) given to Mary from the worship (latria) due to God alone, and see her prayers as a mother's intercession, not divine power.

Scripture answers
Mary is truly blessed and honored, yet Scripture shows her rejoicing in God 'my Savior' - and a Savior is for sinners - while teaching that all have sinned. Jesus had brothers named in the text, and gently redirects a crowd from honoring His mother toward hearing and obeying God's word. Prayer and mediation belong to the living God through Christ alone; even a holy angel, when John falls to worship, refuses and says 'Worship God.'

Luke 1:47Romans 3:23Matthew 13:55-56Mark 6:3Galatians 1:19Luke 11:27-281 Timothy 2:5Matthew 4:10Revelation 19:10Revelation 22:8-9

In fairness: 'Mother of God' (Theotokos) is a genuine biblical truth - Elizabeth calls her 'the mother of my Lord,' and He is God. 'All generations will call me blessed' is Scripture, and Protestants often honor her too little. Her humble faith - 'let it be to me according to your word' - is a real model of trust.

Purgatory, prayers for the dead, and indulgences - a purifying state after death for the saved, and temporal penalties for sin that can be lessened by prayers, Masses, and indulgences.

Their basis
'He will be saved, but only as through fire' (1 Cor 3:15); a sin 'will not be forgiven... either in this age or in the age to come' (Matt 12:32) implies some forgiveness after death; 'you will never get out until you have paid the last penny' (Matt 5:26); and 2 Maccabees 12:44-46 (in their canon) commends atoning prayer for the dead.

Scripture answers
The blood of Jesus cleanses from ALL sin, and by one offering He has perfected for all time those being made holy - there is no remaining debt to burn off. From the cross He declared 'It is finished,' and promised the dying thief 'today you will be with me in Paradise' - no purgation. To be absent from the body is to be present with the Lord, and there is now no condemnation for those in Christ; and salvation cannot be bought or bargained.

1 John 1:7Hebrews 10:14Hebrews 1:3John 19:30Luke 23:432 Corinthians 5:8Philippians 1:23Romans 8:1Acts 8:20

In fairness: The impulse behind it is right to take God's holiness and sin's seriousness seriously - 'without holiness no one will see the Lord' - and sanctification is real. And 2 Maccabees sits in the Catholic canon, so from their frame this rests on Scripture; it is an honest canon difference, not sheer invention.

Transubstantiation and the Mass as sacrifice - the bread and wine become the actual body and blood of Christ, and the Mass re-presents His one sacrifice on the altar.

Their basis
'This IS my body... this is my blood' (Matt 26:26-28); 'unless you eat the flesh of the Son of Man... you have no life in you' (John 6:53-56); the cup is 'a participation in the blood of Christ' (1 Cor 10:16); and whoever eats unworthily is 'guilty of the body and blood of the Lord' (1 Cor 11:27-29).

Scripture answers
Jesus routinely speaks in figures - 'I am the door,' 'I am the vine' - and in the very same discourse says 'the flesh profits nothing; the words I have spoken to you are spirit and life.' Hebrews stresses, over and over, that His sacrifice was made ONCE FOR ALL and is never repeated; the supper is a memorial He gave 'in remembrance of me,' a proclaiming of His death till He comes, not a re-offering of it.

John 10:9John 15:5John 6:63Hebrews 7:27Hebrews 9:25-28Hebrews 10:10-14Luke 22:191 Corinthians 11:24-26

In fairness: They rightly insist on real communion with Christ at the table and reverence there, against a hollow, merely-symbolic view. 'This is my body' and Paul's warning about 'discerning the body' are weighty texts that many Protestants handle too casually.

Scripture PLUS Tradition, and justification by grace received through faith AND sacraments and meritorious works (not by faith alone).

Their basis
'Hold to the traditions... whether by our spoken word or by our letter' (2 Thess 2:15); the church is 'the pillar and buttress of the truth' (1 Tim 3:15); and 'a person is justified by works and not by faith alone' (James 2:24), with the sheep and goats judged by their deeds (Matt 25). The Council of Trent defined justification as a God-initiated, infused righteousness cooperated with over a lifetime.

Scripture answers
Scripture is God-breathed and sufficient to equip fully, and the noble Bereans tested even an apostle's message against it; Jesus sharply rebukes 'making void the word of God by your tradition.' Justification is by grace through faith, apart from works, as a gift - so no one can boast. James is harmonized rightly: works are the fruit and evidence of a living faith, never the ground of our acceptance before God.

2 Timothy 3:16-17Acts 17:11Mark 7:8-13Ephesians 2:8-9Romans 3:28Romans 4:4-5Galatians 2:16Titus 3:5James 2:17-18

In fairness: James 2:24 really does say 'not by faith alone' - they hold a genuine text, and the answer (a faith that works, versus works that earn) must be argued, not waved away. Faith without works IS dead, so Rome rightly resists cheap, fruitless grace, and Trent is not Pelagian - it roots justification in God's grace. Tradition also faithfully carried the canon and the creeds. This is the tradition-that-can-bind that most warrants gentle, careful examination.