וַיְהִ֣י בַבֹּ֔קֶר וַיִּכְתֹּ֥ב דָּוִ֛ד סֵ֖פֶר אֶל־יוֹאָ֑ב וַיִּשְׁלַ֖ח בְּיַ֥ד אוּרִיָּֽה׃
And it came to pass in the morning, that David wrote a letter to Joab, and sent it by the hand of Uriah.
Read kabbalistic (mystical) interpretation of II Samuel 11:14: and classical mystical sources.