'Two edged' in the Bible

for the word of God is active and efficacious, sharper than any two-edged sword, penetrating even to the division of soul and spirit, to the smallest and most inward parts, distinguishing the thoughts, and intentions of the heart.

in his right hand he held seven stars: out of his mouth went a sharp two-edged sword, and his countenance was as the sun shining in his full glory.