Judges 3:16

Ehud made himself a double-edged sword about a foot and a half long. He fastened it on his right side under his clothes.

Judges 3:21

With his left hand Ehud took the sword from his right side and plunged it into the king's belly.

Psalm 45:3

Buckle on your sword, mighty king in your splendor and majesty.

Psalm 149:6

Let the high praises of God be in their throats and two-edged swords in their hands

Song of Songs 3:8

They all hold swords. They are experts in war. Every man has his sword upon his thigh because of fear in the night.

Hebrews 4:12

The Word of God is alive and active and sharper than any two-edged sword. (Ephesians 6:17) It separates the physical person from the spiritual person, of both joints and marrow. And it can discern (judge) the thoughts and intentions of the heart. (John 12:48)

Revelation 1:16

In his right hand he held seven stars. A sharp two-edged sword came out of his mouth. His appearance was like the shinning sun in full strength.

Revelation 2:12

To the angel of the congregation in Pergamum write: These are the words of him who has the sharp two-edged sword:

Treasury of Scripture Knowledge

Summary

But Ehud made him a dagger which had two edges, of a cubit length; and he did gird it under his raiment upon his right thigh.

Bible References

Two edges

Psalm 149:6
Let the high praises of God be in their throats and two-edged swords in their hands
Hebrews 4:12
The Word of God is alive and active and sharper than any two-edged sword. (Ephesians 6:17) It separates the physical person from the spiritual person, of both joints and marrow. And it can discern (judge) the thoughts and intentions of the heart. (John 12:48)
Revelation 1:16
In his right hand he held seven stars. A sharp two-edged sword came out of his mouth. His appearance was like the shinning sun in full strength.
Revelation 2:12
To the angel of the congregation in Pergamum write: These are the words of him who has the sharp two-edged sword:

Upon

Judges 3:21
With his left hand Ehud took the sword from his right side and plunged it into the king's belly.
Psalm 45:3
Buckle on your sword, mighty king in your splendor and majesty.
Song of Songs 3:8
They all hold swords. They are experts in war. Every man has his sword upon his thigh because of fear in the night.