So concerning them Moses
Mosheh (mo-sheh')
drawing out (of the water), i.e. rescued; Mosheh, the Israelite lawgiver -- Moses.
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.
Eleazar
'El`azar (el-aw-zawr')
God (is) helper; Elazar, the name of seven Israelites -- Eleazar.
the priest
kohen (ko-hane')
literally, one officiating, a priest; also (by courtesy) an acting priest (although a layman) -- chief ruler, own, priest, prince, principal officer.
and Joshua
Yhowshuwa` (yeh-ho-shoo'-ah)
Jehovah-saved; Jehoshua (i.e. Joshua), the Jewish leader -- Jehoshua, Jehoshuah, Joshua.
the son
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 Nun
Nuwn (noon)
perpetuity, Nun or Non, the father of Joshua -- Non, Nun.
and the chief
ro'sh (roshe)
the head (as most easily shaken), whether literal or figurative (in many applications, of place, time, rank, itc.)
fathers
'ab (awb)
father, in a literal and immediate, or figurative and remote application) -- chief, (fore-)father(-less), patrimony, principal. Compare names in Abi-.
of the tribes
matteh (mat-teh')
rod, staff, tribe.
of 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.