Whose sisters
'achowth (aw-khoth')
a sister (used very widely, literally and figuratively) -- (an-)other, sister, together.
were Zeruiah
Tsruwyah (tser-oo-yaw')
wounded; Tserujah, an Israelitess -- Zeruiah.
and Abigail
'Abiygayil (ab-ee-gah'-yil)
father (i.e. source) of joy; Abigail or Abigal, the name of two Israelitesses -- Abigal.
And the sons
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 Zeruiah
Tsruwyah (tser-oo-yaw')
wounded; Tserujah, an Israelitess -- Zeruiah.
Abishai
'Abiyshay (ab-ee-shah'ee)
father of a gift (i.e. probably generous); Abishai, an Israelite -- Abishai.
and Joab
Yow'ab (yo-awb')
Jehovah-fathered; Joab, the name of three Israelites -- Joab.
and Asahel
`Asah'el (as-aw-ale')
God has made; Asahel, the name of four Israelites -- Asahel.
three
shalowsh (shaw-loshe')
masculine shlowshah {shel-o-shaw'}; or shloshah {shel-o-shaw'}; a primitive number; three; occasionally (ordinal) third, or (multipl.) thrice