How do we know that faith in Christ is enough?

In Romans 10:17, it is emphasized that 'faith cometh by hearing, and hearing by the word of God.' This reveals that the foundation of faith is not based on empirical evidence or miraculous events, but rather on accepting the truth of God's word as revealed in Scripture. An example of this principle can be found in Luke 16:31, where Abraham states that even if someone rose from the dead, it would not convince those who do not heed the Scriptures. Thus, the essence of saving faith lies in its reliance on God's word, confirming that Christ's promise is sufficient for all who believe.