How do we know salvation comes through faith?

Salvation is a work of grace that is received through faith alone. Ephesians 2:8-9 states that we are saved by grace through faith, not of our own works, lest any man should boast. This reinforces the doctrine that faith is the means by which we accept God's promise of salvation, which is intrinsically linked to Christ's redemptive work. Just as the nobleman in John 4 believed the word of Jesus, we too are to put our trust fully in the promises found in Scripture, ensuring that our faith rests not on our own abilities but on Christ alone.