1 Sam 17:20

וַיַּשְׁכֵּ֨ם דָּוִ֜ד בַּבֹּ֗קֶר וַיִּטֹּ֤שׁ אֶת־הַצֹּאן֙ עַל־שֹׁמֵ֔ר וַיִּשָּׂ֣א וַיֵּ֔לֶךְ כַּאֲשֶׁ֥ר צִוָּ֖הוּ יִשָׁ֑י וַיָּבֹא֙ הַמַּעְגָּ֔לָה וְהַחַ֗יִל הַיֹּצֵא֙ אֶל־הַמַּ֣עֲרָכָ֔ה וְהֵרֵ֖עוּ בַּמִּלְחָמָֽה׃

So David got up early in the morning, left the flock with a keeper, loaded up, and set out as Jesse had instructed him. He reached the camp as the army was marching out to its position and shouting the battle cry.