Mark 7:37

And were beyond measure astonished
The man that was cured, the men that brought him, and the whole multitude were exceedingly, beyond all expression, amazed at what was done, in this case, and many others; for there were other miracles also wrought at this time; see ( Matthew 15:30 Matthew 15:31 ) . The grace of God, in opening the ears and heart of a sinner, and causing the tongue of the dumb to sing his praise, is very astonishing, to men and angels; to the persons themselves that partake of it; and to all the saints that hear of it; it is amazing that such grace should be bestowed at all; and it is more, that it should be communicated to such unworthy persons it is; as also that it should produce such effects it does; that it should make such a surprising change, and be attended with such blessed consequences:

saying, he hath done all things well;
not by Beelzebub, the prince of devils, as said the Scribes and Pharisees; nor in any ostentatious manner, for the sake of the honour and applause of men, as they plainly saw; but for the good of mankind, and for the glory of God: and as all the miraculous works, which Christ did, were well done by him, so all other works of his: all that he did in eternity before the world was, he did well; what he did in the council and covenant of grace, in espousing the persons and cause of his people, and in all his federal transactions and suretyship engagements for them: he drew nigh to God on their account; he cheerfully agreed to what his Father proposed; he entered into a covenant with him, and took the care and charge of all his people, and of all promises and blessings of grace for them: and whatsoever he has done in time is well done; as his assumption of human nature; taking a nature, and not a person, this of a virgin, and an holy nature, though subject to sinless infirmities, and this in due and proper time; also his subjection to the law, moral, civil, and ceremonial, as it became him to fulfil all righteousness; and his preaching the Gospel, which he did with authority, and which he spake as never man did, and which he confirmed by his miracles; but especially the great work of redemption he came about, was well done by him: this he has thoroughly done; he has redeemed his people from the law, its curse, and condemnation; he has ransomed them out of the hands of Satan; he has saved them from all their sins; he has procured the remission of them, made reconciliation for them, and brought in an everlasting righteousness: he has done this work to the satisfaction of all parties; to the glory of all the divine perfections, of justice, as well as of grace and mercy; to the contentment and pleasure of all the divine persons; his Father, himself, and the blessed Spirit: and to the joy of angels and men: and all that he has done, or is now doing in heaven, as an advocate and intercessor, is done well; and we may be assured, that all that he will do hereafter, as the judge of quick and dead, will be done in like manner.

He maketh both the deaf to hear, and the dumb,
or those that could not speak, at least without a great deal of difficulty,

to speak;
an instance of both which there was in this single man's case.