John Calvin on Isaiah 42:2

2. He shall not cry aloud. The Prophet shews of what nature the coming of Christ will be; that is, without pomp or splendor, such as commonly attends earthly kings, at whose arrival there are uttered various noises and loud cries, as if heaven and earth were about to mingle. But Isaiah says that Christ will come without any noise or cry; and that not only for the sake of applauding his modesty, but, first, that we may not form any earthly conception of him; secondly, that, having known his kindness by which he draws us to him, we may cheerfully hasten to meet him; and, lastly, that our faith may not languish, though his condition be mean and despicable.

He shall not lift up his voice; that is, he shall create no disturbance; as we commonly say of a quiet and peaceable man, “He makes no great noise.” “Il ne fait pas grand bruit.” And indeed he did not boast of himself to the people, but frequently forbade them to publish his miracles, that all might learn that his power and authority was widely different from that which kings or princes obtain, by causing themselves to be loudly spoken of in order to gain the applause of the multitude. (Matthew 8:4; 9:30; 12:16; Mark 5:43; Luke 8:56.)