For the word of God is alive and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow. it judges the thoughts and attitudes of the heart.
Hebrews 4:12

All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the servant of God may be thoroughly equipped for every good work.
2 Timothy 3:16-17 ​​