And thou shalt offer
zabach (zaw-bakh')
to slaughter an animal (usually in sacrifice) -- kill, offer, (do) sacrifice, slay.
peace offerings
shelem (sheh'-lem)
requital, i.e. a (voluntary) sacrifice in thanks -- peace offering.
and shalt eat
'akal (aw-kal')
to eat -- at all, burn up, consume, devour(-er, up), dine, eat(-er, up), feed (with), food, freely, in...wise(-deed, plenty), (lay) meat, quite.
there and rejoice
samach (saw-makh')
probably to brighten up, i.e. (figuratively) be (causatively, make) blithe or gleesome
before
paniym (paw-neem')
the face (as the part that turns); used in a great variety of applications (literally and figuratively); also (with prepositional prefix) as a preposition (before, etc.)
the LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
thy God
'elohiym (el-o-heem')
angels, exceeding, God (gods)(-dess, -ly), (very) great, judges, mighty.