For he that is entered into his rest, he also hath ceased from his own works, as God did from his.
Let us labour therefore to enter into that rest, lest any man fall after the same example of unbelief.
Hebrews 4:10-11 (KJV)
The living and active Word
For the word of God is living and active and sharper than any two-edged sword, and piercing as far as the division of soul and spirit, of both joints and marrow, and able to judge the thoughts and intentions of the heart.
And there is no creature hidden from His sight, but all things are open and laid bare to the eyes of Him with whom we have to do.
Hebrews 4:12-13 (NASB)
Two-Edged Sword
“For 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.”