KJV : And it shall be, when they say <0559> (8799) unto thee, Wherefore sighest <0584> (8737) thou? that thou shalt answer <0559> (8804), For the tidings <08052>; because it cometh <0935> (8802): and every heart <03820> shall melt <04549> (8738), and all hands <03027> shall be feeble <07503> (8804), and every spirit <07307> shall faint <03543> (8765), and all knees <01290> shall be weak <03212> (8799) [as] water <04325>: behold, it cometh <0935> (8802), and shall be brought to pass <01961> (8738), saith <05002> (8803) the Lord <0136> GOD <03069>. {shall be weak...: Heb. shall go into water}
NASB :
NASB# : "And when<3588> they say<559> to you, 'Why<5921><4100> do you groan<584>?' you shall say<559>, 'Because<413> of the news<8052> that is coming<935>; and every<3605> heart<3820> will melt<4549>, all<3605> hands<3027> will be feeble<7503>, every<3605> spirit<7307> will faint<3543> and all<3605> knees<1290> will be weak<1980> as water<4325>. Behold<2009>, it comes<935> and it will happen<1961>,' declares<5002> the Lord<136> GOD<3068>."