1 Sam 29:8

29:8 But what have I done. A protest of genuine innocence when spoken to Saul (26:18), the question is now no more than a ruse. David has indeed done much (27:8–12), if Achish only could see it.

that I may not go and fight against the enemies of my lord the king. As in 28:2, David again deals in ambiguities apparent to the reader, if not to Achish. The ambiguity here is the identity of “my lord the king.” It could be Achish, Saul, or possibly God Himself.