1 Samuel 26:5-6

5 One night, David went secretly to Saul's camp. Saul was asleep in the middle of the tents. The leader of his army, Ner's son Abner, was with him. He was asleep too. The army was all around them. David could see all this.

6 David spoke to two of his men. One of them was Ahimelech, a Hittite man. The other man was Abishai, who was Joab's brother (Zeruiah was their mother). David asked them, ‘Which one of you will go down into Saul's camp with me?’

26:6Zeruiah was David's older sister.

Abishai said, ‘I will come with you.’