1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
26:6And David spake and said to Ahimelech the Hittite, and to Abishai the son of Zeruiah, Joab's brother, saying, Who will go down with me to Saul to the camp? And Abishai said, I will go down with thee.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.