NET

19 Some men from Manasseh joined David when he went with the Philistines to fight against Saul. (But in the end they did not help the Philistines because, after taking counsel, the Philistine lords sent David away, saying, “It would be disastrous for us if he deserts to his master Saul.”)

Darby

19 And there fell some of Manasseh to David, when he came with the Philistines against Saul to battle: but they helped them not; for the lords of the Philistines upon deliberation sent him away, saying, He will fall to his master Saul at the peril of our heads.

KJV

19 And there fell [some] of Manasseh to David, when he came with the Philistines against Saul to battle: but they helped them not: for the lords of the Philistines upon advisement sent him away, saying, He will fall to his master Saul to [the jeopardy of] our heads.