Ezekiel 21:5

5 So all the people will know that I, the Lord, have taken My sword from its sheath-it will not be sheathed again.

Ezekiel 21:5 Meaning and Commentary

Ezekiel 21:5

That all flesh may know that I the Lord have drawn forth my
sword out of his sheath
The same with kindling a fire in Judea, (See Gill on Ezekiel 20:48): it shall not return any more;
that is, into its sheath, until it has done all its work; meaning that the Chaldean army should not return to their own land until they had executed the whole will of God upon the Jews; this is the fire that should not be quenched, ( Ezekiel 20:48 ) and here ends the explanation of the said prophecy.

Ezekiel 21:5 In-Context

3 and say to it: This is what the Lord says: I am against you. I will draw My sword from its sheath and cut off both the righteous and the wicked from you.
4 Since I will cut off [both] the righteous and the wicked, My sword will therefore come out of its sheath against everyone from the south to the north.
5 So all the people will know that I, the Lord, have taken My sword from its sheath-it will not be sheathed again.
6 "But you, son of man, groan! Groan bitterly with a broken heart right before their eyes.
7 And when they ask you: Why are you groaning? then say: Because of the news that is coming. Every heart will melt, and every hand will become weak. Every spirit will be discouraged, and every knee will turn to water. Yes, it is coming and it will happen." [This is] the declaration of the Lord God .
Holman Christian Standard Bible ® Copyright © 2003, 2002, 2000, 1999 by Holman Bible Publishers.  Used by permission.  All rights reserved.