1 Samuel 19:5

5 He took his life in his hands when he killed the Philistine. The LORD won a great victory for all Israel, and you saw it and were glad. Why then would you do wrong to an innocent man like David by killing him for no reason?”

Read 1 Samuel 19:5 Using Other Translations

For he did put his life in his hand, and slew the Philistine, and the LORD wrought a great salvation for all Israel: thou sawest it, and didst rejoice: wherefore then wilt thou sin against innocent blood, to slay David without a cause?
For he took his life in his hand and he struck down the Philistine, and the LORD worked a great salvation for all Israel. You saw it, and rejoiced. Why then will you sin against innocent blood by killing David without cause?"
Have you forgotten about the time he risked his life to kill the Philistine giant and how the LORD brought a great victory to all Israel as a result? You were certainly happy about it then. Why should you murder an innocent man like David? There is no reason for it at all!”

What does 1 Samuel 19:5 mean?

John Gill's Exposition of the Bible
1 Samuel 19:5

For he did put his life in his hand
Exposed himself to the utmost danger, when no one in all the camp of Israel would do the like:

and slew the Philistine;
Goliath of Gath, who defied the armies of Israel; against him he went unarmed, only with his sling and stones, and fought him, and slew him:

and the Lord wrought a great salvation for all Israel;
by his hand, so that they were delivered from their enemies, who fled before them, and they pursued them, and got a complete victory over them:

thou sawest [it], and didst rejoice;
he was an eyewitness of David's going forth against the Philistine, and slaying him, and of all the happy effects of it, which then greatly affected him, and he could not forbear expressing great joy on that occasion:

wherefore then wilt thou sin against innocent blood, to slay David
without a cause?
and so entail the guilt of it on himself and family.

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