John 1:1

In the beginning was the Word, and the Word was with God, and the Word was God.

Hebrews 4:12

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.

2 Timothy 3:16

All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness,