3 occurrences across the corpus

King James Version

Psalms 149:6

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

Proverbs 5:4

But her end is bitter as wormwood, sharp as a two-edged sword.

KJV Apocrypha (Catholic Deuterocanon)

Sirach (Ecclesiasticus) 21:3

All iniquity is as a two edged sword, the wounds whereof cannot be healed.