John 4:34

Jesus saith unto them
His disciples:

my meat is to do the will of him that sent me.
The Ethiopic version reads, "of my Father that sent me", and who is undoubtedly intended. Now as food is pleasant, and delightful, and refreshing to the body of man, so doing the will of God was as delightful and refreshing to the soul of Christ: he took as much pleasure in it, as an hungry man does in eating and drinking. One part of the will of God was to assume human nature; this he had done, and with delight and pleasure: another part of it was to fulfil the law; and this was in his heart, and was his delight, and he was now doing it: and another branch of it was to suffer and die, in the room and stead of his people; and as disagreeable as this was in itself to the human nature, yet he cheerfully agreed to it; and was sometimes, as it were, impatient till it was accomplished; and he voluntarily became obedient to it: no man could, with greater eagerness, fall to eating, when hungry, than Christ went about his Father's will and work, even that which was most ungrateful to him, as man.

And to finish his work;
one part of which was to preach the Gospel, and for, which he was anointed and sent; and which he did with great assiduity and constancy: and another part of it was the conversion of sinners by it, whom he was sent to call, and with whom he delighted to be; and was the work he was now about, and took the pleasure in, the text expresses: and beside these miracles were works his Father gave him to finish; such as healing diseases, and dispossessing of devils, and which he went about doing continually, with great delight: but the chief, work of all is, that of redemption and salvation of his chosen ones: this was a work his Father called him to, and sent him into this world to perform, which he gave unto him, and Christ accepted of, and agreed to do; and though it was a very toilsome and laborious one, there being a righteous law to be fulfilled, justice to be satisfied, the sins of all his people to bear, as well as the wrath of God, and the curse of the law, and numerous enemies to grapple with, and an accursed death to undergo; yet with pleasure he performed this: for the joy of his Father's will, accomplishing his counsels and covenant, and his own engagements, and procuring the salvation of his people, he endured the cross patiently, and despised the shame of it. The whole of the and work of God was done by him, just as the Lord commanded it; exactly, according to the pattern given him, with all faithfulness and integrity; with the most consummate wisdom and prudence; with all application, diligence, and constancy, and so as to finish it, and that without the help of any other; and in such a manner that nothing can be added to it to make it more perfect, or that it can be undone again by men or devils: and that the doing and finishing of this were his meat, or as delightful and refreshing to him as meat is to the body, appears from his ready and cheerful engaging in it in eternity; from his early and industrious entrance on it in time; from his constancy in it, when he had begun, insomuch that nothing could deter him from it; nor did he sink and fail under it, nor left it till he had finished it.