אֵת֩ ק֨וֹל הַשּׁוֹפָ֤ר שָׁמַע֙ וְלֹ֣א נִזְהָ֔ר דָּמ֖וֹ בּ֣וֹ יִֽהְיֶ֑ה וְה֥וּא נִזְהָ֖ר נַפְשׁ֥וֹ מִלֵּֽט׃
he heard the sound of the horn, and took not warning, his blood shall be upon him; whereas if he had taken warning, he would have delivered his soul.
Read midrashic interpretation of Ezekiel 33:5: and classical rabbinic exegesis.