Hebrews 4:10-12

10For he who has entered His rest has himself also ceased from his works as God did from His.

11Let us therefore be diligent to enter that rest, lest anyone fall according to the same example of disobedience.

12For the word of God is living and powerful, and sharper than any two-edged sword, piercing even to the division of soul and spirit, and of joints and marrow, and is a discerner of the thoughts and intents of the heart.