How do we know that faith in Christ leads to salvation?

In Romans 10, Paul affirms that salvation requires belief in one's heart and confession with the mouth. The assurance given is significant: 'whosoever believes on Him shall not be ashamed.' This promise underscores the importance of faith as a divine work of God. It is through belief in Christ, and not merely through acts or feelings, that individuals are assured of their salvation. The consistent message conveyed is that faith is the gift of God that connects the believer to the righteousness of Christ, leading to justification and acceptance before God.