Hebrews 4:12; Ephesians 6:17; 2 Corinthians 10:3-5

Hebrews 4:12

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.

Ephesians 6:17

17 and take the helmet of salvation, and the sword of the Spirit, which is the word of God,

2 Corinthians 10:3-5

3 For though we walk in the flesh, we are not waging war according to the flesh.

4 For the weapons of our warfare are not of the flesh but have divine power to destroy strongholds.

5 We destroy arguments and every lofty opinion raised against the knowledge of God, and take every thought captive to obey Christ,