1 Chronicles 12:19 NIV

19 Some of the men of Manasseh defected to David when he went with the Philistines to fight against Saul. (He and his men did not help the Philistines because, after consultation, their rulers sent him away. They said, "It will cost us our heads if he deserts to his master Saul.")1

References for 1 Chronicles 12:19