As the LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
commanded
tsavah (tsaw-vaw')
(intensively) to constitute, enjoin -- appoint, (for-)bid, (give a) charge, (give a, give in, send with) command(-er, -ment), send a messenger, put, (set) in order.
Moses
Mosheh (mo-sheh')
drawing out (of the water), i.e. rescued; Mosheh, the Israelite lawgiver -- Moses.
so Aaron
'Aharown (a-har-one')
Aharon, the brother of Moses -- Aaron.
laid it up
yanach (yaw-nakh')
to deposit; by implication, to allow to stay
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 Testimony
`eduwth (ay-dooth')
testimony -- testimony, witness.
to be kept
mishmereth (mish-mer'-reth)
watch, i.e. the act (custody), or (concr.) the sentry, the post; obj. preservation, or (concr.) safe; fig. observance, i.e. (abstr.) duty or (obj.) a usage or party -- charge, keep, or to be kept, office, ordinace, safeguard, ward, watch.