Ezekiel 21:11
And he hath given it to be furbished, that it may be handled: this sword is sharpened, and it is furbished, to give it into the hand of the slayer.
Cross-reference
Ezekiel 21:19
Parallel
In Ezekiel 21:19, the sword's path is marked for the king of Babylon, directly developing the imagery of the sword given into the slayer's hand.
Jeremiah 25:9
Parallel
In Jeremiah 25:9, God calls Nebuchadnezzar His servant to destroy, parallel to the sword given into the slayer's hand.
Jeremiah 51:20–23
Parallel
Jeremiah 51:20-23 describes Babylon as God's battle axe, mirroring the sharpened sword in Ezekiel 21:11 — both depict God's weapon of judgment.