1 Sam 19:5

וַיָּשֶׂם֩ אֶת־נַפְשׁ֨וֹ בְכַפּ֜וֹ וַיַּ֣ךְ אֶת־הַפְּלִשְׁתִּ֗י וַיַּ֨עַשׂ יְהוָ֜ה תְּשׁוּעָ֤ה גְדוֹלָה֙ לְכָל־יִשְׂרָאֵ֔ל רָאִ֖יתָ וַתִּשְׂמָ֑ח וְלָ֤מָּה תֶֽחֱטָא֙ בְּדָ֣ם נָקִ֔י לְהָמִ֥ית אֶת־דָּוִ֖ד חִנָּֽם׃

He took his life in his hands when he struck down the Philistine, and the LORD worked a great salvation for all Israel. You saw it and rejoiced, so why would you sin against innocent blood by killing David for no reason?”