Corpus Scriptorum Ecclesiasticorum Latinorum, Vol. LVI: Augustini Epistulae Pars III

...nor shall he dismiss, nor shall his voice be heard outside. A broken reed he shall not crush, and smoking flax he shall not extinguish, but he shall bring forth judgment in truth. He shall shine and shall not be shaken, until he places judgment upon the earth; and in his name the Gentiles shall hope.

But we translate thus from the Hebrew: Behold my servant, I will receive him, my elect, my soul has taken pleasure in him. I have given my spirit upon him; he shall bring forth judgment to the Gentiles. He shall not cry out nor shall he accept a person i.e., be partial or biased, nor shall his voice be heard outside. A bruised reed he shall not crush, and smoking flax he shall not extinguish; in truth, he shall bring forth judgment. He shall not be sad nor turbulent, until he places judgment on the earth; and the islands shall wait for his law.

From which it appears that Matthew the evangelist did not discard the Hebrew truth, bound by the authority of an old interpretation, but as a Hebrew from the Hebrews, and most learned in the law of the Lord, set forth to the Gentiles those things which he had read in the Hebrew. For if it must be accepted as the Seventy Interpreters published: Jacob is my servant, I will receive him; Israel is my elect, my soul has received him, how do we understand in Jesus that what is written of Jacob and Israel has been fulfilled?

For we read that the blessed Matthew did this not only in this testimony, but also in another: Out of Egypt I have called my son, for which the Seventy translated: He called his sons out of Egypt. Which indeed, unless we follow the Hebrew truth, is manifest that it does not pertain to the Lord Savior.