What does the Bible say about faith and believing?

Hebrews 11:1-6 indicates that faith is essential in the life of a believer, defining faith as the substance of things hoped for and the evidence of things not seen. It is further explained that without faith, it is impossible to please God, for those who come to Him must believe that He is and that He rewards those who diligently seek Him. This intertwining of faith and believing emphasizes that faith is a gracious gift from God that empowers the believer to understand and accept the truths of His Word.