The Bible gives us some good definitions as to what faith is. Hebrews tells us it is the substance of things hoped for and the evidence of things not seen. The seed of faith is planted when we come into total agreement with God’s Word on whatever it is we are hoping and believing God for.
Romans 10:17 So then faith comes by hearing, and hearing by the word of God.
2 Timothy 3:16 All Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness,