1 Samuel 29:4
But the Philistine commanders were angry with Achish and they said to him, “Make this man return, so that he may go back to his place where you have assigned him, and do not let him go down to battle with us, or in the battle he may [turn and] become our adversary. For how could David reconcile himself to his lord [Saul]? Would it not be with the heads of these [Philistine] men?
1 Samuel 14:21
Now the Hebrews who were with the Philistines previously, who went up with them all around in the camp, they also turned to be with the Israelites who were with Saul and Jonathan.
1 Chronicles 12:19
Some [of the men] of Manasseh also defected to David when he came with the Philistines to go to battle against Saul. But David’s men did not [actually] assist the Philistines, for the lords (governors) of the Philistines after consultation sent him away, saying, “At the cost of our heads he may defect to his master Saul.”
1 Samuel 27:6
Then Achish gave David [the town of] Ziklag that day. Therefore Ziklag has belonged to the kings of Judah to
Luke 16:8