Judges 3:16

So Ehud made himself a two-edged sword, a cubit long, which he put on at his right side under his robe.

Judges 3:21

And Ehud put out his left hand, and took the sword from his right side, and sent it into his stomach;

Psalm 45:3

Put on your sword, make it ready at your side, O strong chief, with your glory and power.

Psalm 149:6

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

Song of Songs 3:8

All of them armed with swords, trained in war; every man has his sword at his side, because of fear in the night.

Hebrews 4:12

For the word of God is living and full of power, and is sharper than any two-edged sword, cutting through and making a division even of the soul and the spirit, the bones and the muscles, and quick to see the thoughts and purposes of the heart.

Revelation 1:16

And he had in his right hand seven stars: and out of his mouth came a sharp two-edged sword: and his face was like the sun shining in its strength.

Revelation 2:12

And to the angel of the church in Pergamos say: These things says he 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 mouths, and a two-edged sword in their hands;
Hebrews 4:12
For the word of God is living and full of power, and is sharper than any two-edged sword, cutting through and making a division even of the soul and the spirit, the bones and the muscles, and quick to see the thoughts and purposes of the heart.
Revelation 1:16
And he had in his right hand seven stars: and out of his mouth came a sharp two-edged sword: and his face was like the sun shining in its strength.
Revelation 2:12
And to the angel of the church in Pergamos say: These things says he who has the sharp two-edged sword:

Upon

Judges 3:21
And Ehud put out his left hand, and took the sword from his right side, and sent it into his stomach;
Psalm 45:3
Put on your sword, make it ready at your side, O strong chief, with your glory and power.
Song of Songs 3:8
All of them armed with swords, trained in war; every man has his sword at his side, because of fear in the night.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain