Judges 3:12–31 (ESV)

12 And the people of Israel again did what was evil in the sight of the LORD, and the LORD strengthened Eglon the king of Moab against Israel, because they had done what was evil in the sight of the LORD.

Christ’s two-edged sword is the Word of God. It uncovers our idolatries, our enslavement, and also shows us the path to freedom in Christ. That two-edged sword is what Christ himself submitted to, which brought him to the cross.