Saul knew David's voice, and said, Is this your voice, my son David? David said, It is my voice, my lord, O king.
"It is my voice my lord O king"  (1 Samuel 26:17).  There is a dramatic difference in David's reply to Saul here as contrasted with that other occasion at Engedi.  There David addressed Saul as "My father"  (1 Samuel 24:11), and Saul here sought the same kind of response from David, but David no longer used that terminology.  Saul had given his wife Michal to Palti, and there were no grounds whatever, either for Saul's words, "My son," or for David's responding with, "My father."  It was this, perhaps, that enabled David instantly to see that Saul's words were those of a confirmed hypocrite.  There are many irreconcilable differences in these two accounts in which Saul's life was spared by David.