John 4:31-34

In the mean while Before the people came; his disciples prayed him, saying, Master, eat They set the meat, which they had brought, before him, and requested him to partake of it, knowing how much he needed refreshment. But he said, I have meat to eat that ye know not of Meat which yields me much more refreshment than any food which you can have brought me. He refers to the conversation which he had just had with the woman, and to the expected conversion of the Samaritans. When he sat down upon the well, he was weary, and needed sustenance; but this opportunity of saving souls made him forget his weariness and hunger. Therefore said the disciples Not understanding his words in that spiritual sense in which he had spoken them; one to another With some surprise, considering where he was; Hath any man brought him aught to eat? Has any one been with him while we have been absent, and supplied him with provisions? Jesus Who knew the loss they were at to understand his meaning; saith unto them With a view to explain it; My meat My most refreshing and delightful food, and that which satisfies the strongest appetite of my soul; is to do the will of him that sent me, &c. He made his work his meat and drink; namely, the work he had done, his instructing the woman, and the work he had to do among the Samaritans; the prospect he now had of doing good to many; this was to him the greatest pleasure and satisfaction imaginable. Observe here, reader, 1st, The salvation of sinners is the will of God, and the instruction of them in order thereunto, is his work, 1 Timothy 2:4. 2d, Christ was sent into the world for this purpose, to bring sinners to God, to bring them to know him, and to be happy in him. 3d, He made this work his business and delight. When his body needed food, his mind was so taken up with this, that he forgot both hunger and thirst, both meat and drink. 4th, He was not only ready, upon all occasions, to enter upon his work, but he was concerned and earnest to go through it, and finish it in all its parts. He resolved never to quit it, or lay it down till he could say, It is finished. Many have zeal to carry them out at first, and induce them to undertake the Lord's work; but not zeal to carry them on to the last, and cause them to persevere till they have accomplished it. But our Master has herein left us an example, that we may learn to do the will of God as he did with diligence and close application, as those that make it their business with delight and pleasure in it, as persons in their element with constancy and perseverance, not only inclining them to begin, but aiming at finishing their work.