Then answered David and said to Ahimelech the Hittite, and to Abishai the son of Zeruiah, brother to Joab, saying, Who will go down with me to Saul to the camp? And Abishai said, I will go down with thee. Abishai the son of Zeruiah - She was David's sister; and therefore Abishai and Joab were nephews to David.
Related Commentaries of 1 Samuel 26:6
1 Samuel 26:6
6 Then answered David and said to Ahimelech the Hittite, and to Abishai the son of Zeruiah, brother to Joab, saying, Who will go down with me to Saul to the camp? And Abishai said, I will go down with thee.