Thou hast turned
haphak (haw-fak')
to turn about or over; by implication, to change, overturn, return, pervert
for me my mourning
micepd (mis-pade')
a lamentation -- lamentation, one mourneth, mourning, wailing.
into dancing
machowl (maw-khole')
a (round) dance -- dance(-cing).
thou hast put off
pathach (paw-thakh')
to open wide; specifically, to loosen, begin, plough, carve
my sackcloth
saq (sak)
a mesh (as allowing a liquid to run through), i.e. coarse loose cloth or sacking (used in mourning and for bagging); hence, a bag (for grain, etc.) -- sack(-cloth, -clothes).
and girded
'azar (aw-zar')
to belt -- bind (compass) about, gird (up, with).
me with gladness
simchah (sim-khaw')
blithesomeness or glee, (religious or festival) -- exceeding(-ly), gladness, joy(-fulness), mirth, pleasure, rejoice(-ing).