John Lightfoot on Matthew 12:20

[A bruised reed shall he not break.] These words are to be applied, as appears by those that went before, to our Saviour's silent transaction of his own affairs, without hunting after applause, the noise of boasting, or the loud reports of fame. He shall not make so great a noise as is made from the breaking of a reed now already bruised and half broken, or from the hissing of smoking flax only when water is thrown upon it. How far different is the Messias thus described, from the Messias of the expectation of the Jews! And yet it appears sufficiently that Isaiah, from whom these words are taken, spake of the Messias, and the Jews confess it.

[Till he send forth judgment unto victory.] The Hebrew and LXX in Isaiah read it thus, "He shall bring forth judgment unto truth." The words in both places mean thus much, That Christ should make no sound in the world, or noise of pomp, or applause, or state, but should manage his affairs in humility, silence, poverty, and patience, both while he himself was on earth, and by his apostles, after his ascension, labouring under contempt, poverty, and persecution; but at last "he should bring forth judgment to victory"; that is, that he should break forth and show himself a judge, avenger, and conqueror, against that most wicked nation of the Jews, from whom both he and his suffered such things: and then, also, "he sent forth judgment unto truth," and asserted himself the true Messias, and the Son of God, before the eyes of all; and confirmed the truth of the gospel, by avenging his cause upon his enemies, in a manner so conspicuous and so dreadful. And hence it is, that that sending forth and execution of judgment against that nation is almost always called in the New Testament "his coming in glory." When Christ and his kingdom had so long laid hid under the veil of humility, and the cloud of persecution, at last he brake forth a revenger, and cut off that persecuting nation, and shewed himself a conqueror before the eyes of all, both Jews and Gentiles. Let it be observed in the text before us, how, after the mention of that judgment and victory (against the Jews), presently follows, "and in his name shall the Gentiles trust."