a cup of trembling

“The burden of the word of the LORD for Israel , saith the LORD, which
stretcheth forth the heavens, and layeth the foundation of the earth, and
formeth the spirit of man within him. Behold, I will make Jerusalem a cup of
trembling unto all the people round about, when they shall be in the siege both
against Judah and against Jerusalem . And in that day will I make Jerusalem a
burdensome stone for all people: all that burden themselves with it shall be cut
in pieces, though all the people of the earth be gathered together against it”
(Zechariah 12:1-3).