And the firstborn of the poor shall feed, and the needy shall lie down in safety: and I will kill thy root with famine, and he shall slay thy remnant. And the first-born of the poor, etc. - The Targum goes on applying all to the Messiah. "And the poor of the people shall he feed, and the humble shall dwell securely in his days: and he shall kill thy children with famine, and the remnant of thy people shall he slay."
I will kill "He will slay" - The Septuagint reads המית hemith, to the third person, ανελει; and so the Chaldee. The Vulgate remedies the confusion of persons in the present text, by reading both the verbs in the first person.