Now faith is the substance of things hoped for, the evidence of things not seen.
Hebrews 11:1 KJV
So then faith cometh by hearing, and hearing by the word of God.
Romans 10:17 KJV
For we walk by faith, not by sight
2 Corinthians 5:7 KJV
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
Ephesians 2:8 KJV