I Samuel 17:29 Midrash

וַיֹּ֣אמֶר דָּוִ֔ד מֶ֥ה עָשִׂ֖יתִי עָ֑תָּה הֲל֖וֹא דָּבָ֥ר הֽוּא׃

And David said: ‘What have I now done? Was it not but a word?’

Read midrashic interpretation of I Samuel 17:29: and classical rabbinic exegesis.