'Sighest' in the Bible

And it shall be, when they say unto thee, Wherefore sighest thou? that thou shalt say, Because of the tidings, for it cometh; and every heart shall melt, and all hands shall be feeble, and every spirit shall faint, and all knees shall be weak as water: behold, it cometh, and it shall be done, saith the Lord Jehovah.