Psalm 149:6

Let the high praises of God be in their mouth, and a twoedged sword in their hand;

Cross-reference

Hebrews 4:12 uses the same 'two-edged sword' metaphor for God's word, transforming the literal weapon here into a spiritual image.

Revelation 1:16 depicts Christ with a two-edged sword from his mouth — echoing the sword imagery here, now associated with divine judgment.

In Zechariah 9:13, God uses Judah as a bow and sword—same image of God's people as instruments of judgment.