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

...not only in the desert, but also in his mother’s womb, through the leaping and exultation of his body, he announced Him.

2. What does it signify that it is written in Matthew: A bruised reed he shall not break, and smoking flax he shall not extinguish. — For the exposition of this passage, the whole testimony which Matthew took from the prophet Isaiah must be set forth, and the very words of Isaiah according to the Seventy Interpreters The Septuagint Greek translation of the Old Testament and the Hebrew itself, with which Theodotio, Aquila, and Symmachus agree. Thus, therefore, of the four evangelists, only Matthew has placed: But Jesus, knowing, withdrew from there, and many followed Him, and He cured them all and commanded them not to make Him manifest, so that it might be fulfilled which was said through Isaiah the prophet saying: Behold my servant, whom I have chosen, my beloved, in whom my soul is well pleased. I will place my spirit upon him, and he shall announce judgment to the Gentiles. He shall not contend nor cry out, nor shall anyone hear his voice in the streets. A bruised reed he shall not break, and smoking flax he shall not extinguish, until he casts forth judgment to victory; and in his name the Gentiles shall hope.

For this, it is written in Isaiah according to the Seventy Interpreters thus: Jacob is my servant, I will receive him; Israel is my elect, my soul has received him. I have given my spirit upon him, he shall bring forth judgment to the Gentiles. He shall not cry out...