Because — The saddest news you ever heard is coming.
Related Commentaries of Ezekiel 21:7
Ezekiel 21:7
7 And it shall be, when they say unto thee, Wherefore sighest thou? that thou shalt answer, For the tidings; because it cometh: and every heart shall melt, and all hands shall be feeble, and every spirit shall faint, and all knees shall be weaka as water: behold, it cometh, and shall be brought to pass, saith the Lord GOD.