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

In John 14:6, Jesus explicitly states, 'I am the way, the truth, and the life; no man cometh unto the Father, but by me.' This declaration affirms His unique role as the sole mediator between God and humanity. The means to enter into eternal fellowship with God is only through faith in Christ, who alone can justify and reconcile us. This claim is central to the historic Reformed understanding of salvation, where it is emphasized that belief in Jesus Christ is essential for entering the straight gate, reinforcing the theme of Christ's exclusive and sufficient atonement for sin.