'Deserted' in the Bible

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.”

As David went to Ziklag, these men defected to him from Manasseh: Adnah, Jozabad, Jediael, Michael, Jozabad, Elihu, and Zillethai, captains of thousands who belonged to Manasseh.