How do we know the Gospel is the only way to salvation?

The certainty that the Gospel is the sole means of salvation is grounded in divine revelation provided in Scripture. Jesus' words affirm that He is the exclusive way to God (John 14:6), and the apostolic writings consistently reinforce this foundational truth. Galatians 1:8-9 warns against altering or diluting the message of salvation, confirming the necessity of holding firmly to the original Gospel, which is based on grace through faith in Christ alone. This basis emphasizes the need for believers to both recognize and proclaim this exclusivity, as it is crucial for upholding authentic Christianity.