How do we know Christ's exclusivity in salvation is true?

The exclusivity of salvation through Jesus Christ is underscored in Acts 4:12, where it states unequivocally that 'there is none other name under heaven given among men, whereby we must be saved.' This declaration emphasizes that salvation is a supernatural act of God, solely executed through His appointed means—Jesus Christ. Throughout scripture, God's intent reveals that Jesus was designated as the sole Savior (John 14:6; Acts 10:43). The message of the gospel reinforces the need for faith in Christ alone, dismissing works-based approaches to salvation. Paul further substantiates this in Romans 3:28, where he writes, 'Therefore we conclude that a man is justified by faith without the deeds of the law.' Thus, the divine revelation of scripture makes it abundantly clear that any other means proposed by humanity for salvation is futile and inadequate.