Adam Clarke Bible Commentary
Which came up in a night - St. Jerome, speaking of this plant, the kikayon, assigns to it an extraordinary rapidity of growth. It delights in a sandy soil, and in a few days what was a plant grows into a large shrub. But he does not appear to have meant the ricinus; this however is the most likely. The expressions coming up in a night and perishing in a night are only metaphorical to express speedy growth and speedy decay; and so, as we have seen, the Chaldee interprets it, די בליליא הדי הוה ובליליא אוחרנא אבד "which existed this night but in the next night perished;" and this I am satisfied is the true import of the Hebrew phrase.
Jamieson-Fausset-Brown Bible Commentary
The main lesson of the book. If Jonah so pities a plant which cost him no toil to rear, and which is so short lived and valueless, much more must Jehovah pity those hundreds of thousands of immortal men and women in great Nineveh whom He has made with such a display of creative power, especially when many of them repent, and seeing that, if all in it were destroyed, "more than six score thousand" of unoffending children, besides "much cattle," would be involved in the common destruction: Compare the same argument drawn from God's justice and mercy in . A similar illustration from the insignificance of a plant, which "to-day is and to-morrow is cast into the oven," and which, nevertheless, is clothed by God with surpassing beauty, is given by Christ to prove that God will care for the infinitely more precious bodies and souls of men who are to live for ever (). One soul is of more value than the whole world; surely, then, one soul is of more value than many gourds. The point of comparison spiritually is the need which Jonah, for the time being, had of the foliage of the gourd. However he might dispense with it at other times, now it was necessary for his comfort, and almost for his life. So now that Nineveh, as a city, fears God and turns to Him, God's cause needs it, and would suffer by its overthrow, just as Jonah's material well-being suffered by the withering of the gourd. If there were any hope of Israel's being awakened by Nineveh's destruction to fulfil her high destination of being a light to surrounding heathenism, then there would not have been the same need to God's cause of Nineveh's preservation, (though there would have always been need of saving the penitent). But as Israel, after judgments, now with returning prosperity turns back to apostasy, the means needed to vindicate God's cause, and provoke Israel, if possible, to jealousy, is the example of the great capital of heathendom suddenly repenting at the first warning, and consequently being spared. Thus Israel would see the kingdom of heaven transplanted from its ancient seat to another which would willingly yield its spiritual fruits. The tidings which Jonah brought back to his countrymen of Nineveh's repentance and rescue, would, if believingly understood, be far more fitted than the news of its overthrow to recall Israel to the service of God. Israel failed to learn the lesson, and so was cast out of her land. But even this was not an unmitigated evil. Jonah was a type, as of Christ, so also of Israel. Jonah, though an outcast, was highly honored of God in Nineveh; so Israel's outcast condition would prove no impediment to her serving God's cause still, if only she was faithful to God. Ezekiel and Daniel were so at Babylon; and the Jews, scattered in all lands as witnesses for the one true God, pioneered the way for Christianity, so that it spread with a rapidity which otherwise was not likely to have attended it [FAIRBAIRN].
John Gill Bible Commentary
Then said the Lord, thou hast had pity on the gourd,.... Or, "hast spared it" (c); that is, would have spared it, had it lain in his power, though but a weeds and worthless thing:
for the which thou hast not laboured; in digging the ground, and by sowing or planting it; it being raised up at once by the Lord himself, and not by any, human art and industry; nor by any of his:
neither madest it grow; by dunging the earth about it, or by watering and pruning it:
which came up in a night, and perished in a night; not in the same night; for it sprung up one night, continued a whole any, and then perished the next night. The Targum is more explicit,
"which was in this (or one) night, and perished in another night;''
by all which the Lord suggests to Jonah the vast difference between the gourd he would have spared, and for the loss of which he was so angry, and the city of Nineveh the Lord spared, which so highly displeased him; the one was but an herb, a plant, the other a great city; that a single plant, but the city consisted of thousands of persons; the plant was not the effect of his toil and labour, but the inhabitants of this city were the works of God's hands. In the building of this city, according to historians (d) a million and a half of men were employed eight years together; the plant was liken mushroom, it sprung up in a night, and perished in one; whereas this was a very ancient city, that had stood ever since the days of Nimrod.
(c) "pepercisiti", Pagninus, Montanus, Mercerus, Burkius; "pepercisses", Piscator. (d) Eustathius in Dionys. Perieg. p. 125.