Now Joab
Yow'ab (yo-awb')
Jehovah-fathered; Joab, the name of three Israelites -- Joab.
was over all the host
tsaba' (tsaw-baw')
a mass of persons (or figuratively, things), especially reg. organized for war (an army); by implication, a campaign, literally or figuratively (specifically, hardship, worship)
of Israel
Yisra'el (yis-raw-ale')
he will rule as God; Jisrael, a symbolical name of Jacob; also (typically) of his posterity: --Israel.
and Benaiah
Bnayah (ben-aw-yaw')
Jah has built; Benajah, the name of twelve Israelites -- Benaiah.
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 Jehoiada
Yhowyada` (yeh-ho-yaw-daw')
Jehovah-known; Jehojada, the name of three Israelites -- Jehoiada.
was over the Cherethites
Krethiy (ker-ay-thee')
a Kerethite or life-guardsman (only collectively in the singular as plural) -- Cherethims, Cherethites.
kariy (kaw-ree')
a life-guardsman -- captains, Cherethites (from the margin).
and over the Pelethites
Plethiy (pel-ay-thee')
a courier (collectively) or official messenger -- Pelethites.