The three sons of Zeruiah were there: Joab, Abishai and Asahel. Now Asahel was as fleet-footed as a wild gazelle. (NIV)
Three sons of Zeruiah [the half sister of David] were there: Joab, Abishai, and Asahel. Now Asahel was as light of foot as a wild roe or antelope. (AMP)
And there were three sons of Zeruiah there, Joab, and Abishai, and Asahel: and Asahel was as light of foot as a wild roe. (KJV)