Hebrews 4
11 Ref Let us therefore give diligence to enter into that rest, that no man fall after the same example of disobedience.
12 Ref For the word of God is living, and active, and sharper than any two-edged sword, and piercing even to the dividing of soul and spirit, of both joints and marrow, and quick to discern the thoughts and intents of the heart.