
Belief is not just an intellectual assent. Real belief - real faith - will change how you live your life. Your every-day decisions will be affected, because you seek to follow God's biblical plan and the Holy Spirit even when you don't understand it, when it seems scary, and when others think you're doing the wrong thing.
And acting out this belief requires knowing the Word of God! Because how can we believe Him if we don't know what He says?
Belief is also not a feeling. You can be acting in faith even when you feel fear. God responds when we trust Him even when our emotions are in turmoil!