That it might be fulfilled ... - Matthew here quotes a passage from Isaiah 42:1-4, to show the "reason why he thus retired from his enemies and sought concealment." The Jews, and the disciples also at first, expected that the Messiah would be a conqueror, and vindicate himself from all his enemies. When they saw him retiring before them, and, instead of subduing them by force, seeking a place of concealment, it was contrary to all their previous notions of the Messiah. Matthew by this quotation shows that "their" conceptions of him had been wrong. Instead of a warrior and an earthly conqueror, he was "predicted" under a totally different character. Instead of shouting for battle, lifting up his voice in the streets, oppressing the feeble - "breaking bruised reeds and quenching smoking flax, as a conqueror" - he would be peaceful, retiring; would strengthen the feeble, and would cherish the faintest desires of holiness. This appears to be the general meaning of this quotation here. Compare the notes at Isaiah 42:1-4.

That it might be fulfilled which was spoken by Esaias the prophet, saying. Isaiah 42:1 not that Christ gave the above charge with this view, that this passage in Isaiah might have its accomplishment: but this is an observation of the evangelist, that what was now done by Christ, by his private departure from the Pharisees, being unwilling to irritate them more; by his preaching to the Idumeans, Tyrians, and Sidonians; by healing their diseases, and shunning all ostentation and popular applause; and prohibiting to tell who and where he was, was a fulfilling of this prophecy; in which the Holy Spirit foreknowing the disposition and actions of Christ, predicted them: which, when considered, must be looked upon as a very large proof of the truth of his being the Messiah. For that this prophecy belongs to the Messiah, is owned by the Jews themselves (k).

(k) Targum & Kimchi in loc. Abarbinel Mashmia Jeshua, fol. 9. 1, 2. & 10. 1, 2. & 21. 2. & in Is. fol 64. 3, 4. R. Isaac Chizzuk Emuna, p. 299.

That it might be fulfilled which was spoken by Esaias the prophet, saying,

12:17 That it might be fulfilled. Thus it was fulfilled.

Esaias the prophet. See Isa 42:1-4.

17. That it might be fulfilled which was spoken by Esaias the prophet, saying-(Isa 42:1).

12:14-21 The Pharisees took counsel to find some accusation, that Jesus might be condemned to death. Aware of their design, as his time was not come, he retired from that place. Face does not more exactly answer to face in water, than the character of Christ drawn by the prophet, to his temper and conduct as described by the evangelists. Let us with cheerful confidence commit our souls to so kind and faithful a Friend. Far from breaking, he will strengthen the bruised reed; far from quenching the smoking flax, or wick nearly out, he will rather blow it up into a flame. Let us lay aside contentious and angry debates; let us receive one another as Christ receives us. And while encouraged by the gracious kindness of our Lord, we should pray that his Spirit may rest upon us, and make us able to copy his example.