How do we know that faith in Jesus Christ is enough for salvation?

The assurance of salvation through faith in Jesus Christ rests in the belief that He is the sole mediator who reconciles us to God. As articulated in 1 Timothy 2:5, there is one God and one mediator between God and men, the man Christ Jesus. His atoning work on the cross satisfies the demands of divine justice, ensuring that those who trust in Him are justified. Thus, it is not our works but His finished work that secures our salvation, leading us to understand that faith in Him is indeed enough.