It is a sign
'owth (oth)
a signal, as a flag, beacon, monument, omen, prodigy, evidence, etc. -- mark, miracle, (en-)sign, token.
between me and the children
ben (bane)
a son (as a builder of the family name), in the widest sense (of literal and figurative relationship, including grandson, subject, nation, quality or condition, etc.
of Israel
Yisra'el (yis-raw-ale')
he will rule as God; Jisrael, a symbolical name of Jacob; also (typically) of his posterity: --Israel.
for ever
`owlam (o-lawm')
concealed, i.e. the vanishing point; generally, time out of mind (past or future), i.e. (practically) eternity; frequentatively, adverbial (especially with prepositional prefix) always
for in six
shesh (shaysh)
six (as an overplus (see 7797) beyond five or the fingers of the hand); as ord. sixth -- six(-teen, -teenth), sixth.
days
yowm (yome)
a day (as the warm hours),
the LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
made
`asah (aw-saw')
to do or make, in the broadest sense and widest application
heaven
shamayim (shaw-mah'-yim)
air, astrologer, heaven(-s).
and earth
'erets (eh'-rets)
the earth (at large, or partitively a land) -- common, country, earth, field, ground, land, natins, way, + wilderness, world.
and on the seventh
shbiy`iy (sheb-ee-ee')
seventh -- seventh (time).
day
yowm (yome)
a day (as the warm hours),
he rested
shabath (shaw-bath')
to repose, i.e. desist from exertion; used in many implied relations (causative, figurative or specific)
and was refreshed
naphash (naw-fash')
to breathe; passively, to be breathed upon, i.e. (figuratively) refreshed (as if by a current of air) -- (be) refresh selves (-ed).