How do we know that Jesus is the only door to salvation?

In John 10:9, Jesus explicitly claims, 'I am the door; if anyone enters by me, he will be saved.' This statement affirms His unique position as the sole means of accessing salvation and grace. The early teaching of the church reinforced this truth, emphasizing that no other path leads to God. The necessity of recognizing Jesus as the exclusive door serves to underscore the gravity of the gospel; underlining that to deviate from this truth is to embrace a false hope. This declaration by Christ underscores the importance of His redemptive work, which is central to the believer's faith and assurance of salvation.