Psalm 51:6

Behold, You desire truth in the inward parts, and in the hidden part You will make me to know wisdom. 

As we study the Bible and learn, we grow in truth in our spirit.  We receive revelation knowledge from the Lord and grow in faith.  Our faith increases over time as we know the truth from the word of God.  Which is an exciting thing for us as individuals as God speaks what we need directly into our lives.