Jeremiah 23:29
29 yIs not my word like fire, declares the Lord, and zlike a hammer that breaks the rock in pieces?
Hebrews 4:12
12 For wthe word of God is living and xactive, ysharper than any ztwo-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and adiscerning the thoughts and intentions of the heart.