How do we know that Christ alone is the way to salvation?

The apostle Paul in 2 Corinthians 11 stresses the importance of preaching the true Jesus and the true gospel. Galatians 1:8 supports this sentiment, indicating that even if an angel from heaven preached a different gospel, it should be accursed. This highlights the exclusivity of Christ as the sole mediator of salvation. John 14:6 states, 'I am the way, the truth, and the life. No one comes to the Father except through Me,' confirming that salvation is found only in Christ. Thus, the Christian faith rests on the conviction that there is no other pathway to reconciliation with God except through Jesus Christ.