How do we know that only faith in Christ leads to eternal life?

The certainty of eternal life through faith in Christ is rooted in the teachings of Scripture. In John 3:16, we see that God loved the world through giving His only begotten Son, stating that 'whosoever believeth in Him should not perish, but have everlasting life.' This teaches that faith in Christ is not just a choice but the singular path to life everlasting. Moreover, Romans 3:25 emphasizes that God set forth Christ as a propitiation through faith in His blood, highlighting that faith in Jesus is the means by which believers are justified and receive eternal life. Thus, the testimony of Scripture consistently affirms that faith in Christ is the only way to salvation.