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."

Jeremiah 17:9- "The heart is deceitful above all things, and desperately sick; who can understand it?"

Philippians 1:17- "The former proclaim Christ out of selfish ambition, not sincerely but thinking to afflict me in my imprisonment."