Here's a simple non-exhaustive dot-point summary of passages that refute the idea that only Paul had authority to teach salvation to believers today:
2 Timothy 3:10-17 – This passage concludes that “Every Scripture is God-breathed and profitable for teaching, for reproof, for correction, and for instruction in righteousness, that each person who belongs to God may be complete, thoroughly equipped for every good work.” Paul, writing to Timothy — a fellow minister to Gentiles — affirms that every Scripture, not just his own letters, is profitable for equipping believers. This includes both Old and New Testament writings. Therefore, every Scripture is applicable to all believers, Jew and Gentile alike.
Acts 15:7-12 – Peter says Gentiles heard the gospel and believed by his preaching, and that salvation is by grace for all—Jew and Gentile.
2 Peter 3:14-18 – Peter acknowledges Paul’s writings as scripture but also recognises “the other scriptures”. He also warns about the ignorant and unstable that twist the scriptures to their own destruction, like you zbusc.
Matthew 28:19-20 – Jesus gave the Great Commission to all the apostles, not just Paul, commanding them to teach all nations.
Hebrews 10:1-39 – Hebrews teaches salvation by grace through faith in Christ’s once-for-all sacrifice, not by works or law. It also speaks about the new covenant of which both Jews and Gentiles are now a part of (refer Hebrews 10:15-18; 8:8-13).
John 20:30-31 – John says his gospel was written so people may believe that Jesus is the Christ and have life in His name.
Revelation 1:1-6 – “This is the Revelation of Jesus Christ, which God gave Him to show His servants … which He sent and made know by His angel to His servant, John, …”. In verse 4 John addresses the “seven assemblies/churches that are in Asia”. This region, known as Asia Minor (modern-day western Turkey), was part of the Gentile Roman world. While these churches likely included both Jewish and Gentile believers, the majority were probably Gentiles by the time of writing. This demonstrates that John was authoritatively addressing Gentile believers, not only Jewish ones.
Revelation 22:16-17 – Jesus through John, speaking to all the assemblies/churches, invites “he who hears/is thirsty/desires” to freely receive salvation, showing it applies to all, not just Paul's audience.
1 Corinthians 3:4-7 – Paul says he and others (e.g., Apollos) are fellow ministers by whom people believed — not Paul alone.
