Galatians 3:6-7

Just as Abraham believed God, and it was credited to Him as righteousness, (as conformity to God’s will and purpose-so it is with you also). So understand that it is the people who live by faith (with confidence in the power and goodness of God) who are (the true) sons of Abraham.

When we decide to live by faith and trust Jesus with our lives, we set aside what we think we know.  Faith is not a tangible substance, nor is it created by formula.  Faith comes by revelation of the Word of God when our spirits make a connection and our understanding increases.  Our faith gives us confidence in the power of God and opens the doors for Him to move on our behalf.