Hebrews

For the word of God is living and active, sharper than any two-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and discerning the thoughts and intentions of the heart.  (Hebrews 4:12)

For I will be merciful toward their iniquities, and I will remember their sins no more.  (Hebrews 8:12)

And without faith it is impossible to please him, for whoever would draw near to God must believe that he exists and that he rewards those who seek him.  (Hebrews 11:6)