Ezekiel 33:4 Midrash

וְשָׁמַ֨ע הַשֹּׁמֵ֜עַ אֶת־ק֤וֹל הַשּׁוֹפָר֙ וְלֹ֣א נִזְהָ֔ר וַתָּ֥בוֹא חֶ֖רֶב וַתִּקָּחֵ֑הוּ דָּמ֥וֹ בְרֹאשׁ֖וֹ יִֽהְיֶֽה׃

then whosoever heareth the sound of the horn, and taketh not warning, if the sword come, and take him away, his blood shall be upon his own head;