Then Isaac sowed. Here Moses proceeds to relate in what manner Isaac reaped the manifest fruit of the blessing promised to him by God; for he says, that when he had sowed, the increase was a hundredfold: which was an extraordinary fertility, even in that land. He also adds, that he was rich in cattle, and had a very great household. Moreover, he ascribes the praise of all these things to the blessing of God; as it is also declared in the psalm, that the Lord abundantly supplies what will satisfy his people while they sleep. (Psalm 127:2.) It may, however, be asked, how could Isaac sow when God had commanded him to be a stranger all his life? Some suppose that he had bought a field, and so translate the word qnh (kanah) a possession; but the context corrects their error: for we find soon afterwards, that the holy man was not delayed, by having land to sell, from removing his effects elsewhere: besides, since the purchasing of land was contrary to his peculiar vocation and to the command of God, Moses undoubtedly would not have passed over such a notable offense. To this may be added, that since express mention is immediately made of a tent, we may hence infer, that wherever he might come, he would have to dwell in the precarious condition of a stranger. We must, therefore, maintain, that he sowed in a hired field. For although he had not a foot of land in his own possession, yet, that he might discharge the duty of a good householder, it behoved him to prepare food for his family; and perhaps hunger quickened his care and industry, that he might with the greater diligence make provision for himself against the future. Nevertheless, it is right to keep in mind, what I have lately alluded to, that he received as a divine favor the abundance which he had acquired by his own labor.

Isaac sowed in that land - Being now perfectly free from the fear of evil, he betakes himself to agricultural and pastoral pursuits, in which he has the especial blessing of God, so that his property becomes greatly increased.
A hundred-fold - מאה שערים, meah shearim, literally, "A hundred-fold of barley;" and so the Septuagint, ἑκατοστευουσαν κριθην. Perhaps such a crop of this grain was a rare occurrence in Gerar. The words, however, may be taken in a general way, as signifying a very great increase; so they are used by our Lord in the parable of the sower.

Then, Isaac sowed in that land,.... In the land of Gerar; after matters were settled between him and Abimelech, and he had ordered his servants to do him no hurt, he sowed wheat or barley, or some such grain:
and received in the same year an hundred fold; in which he sowed it, and which many take to be a year of famine; and so it was the more extraordinary, that there should be such a plentiful crop produced on Isaac's ground, when there was such barrenness elsewhere: but it does not seem likely that it should be the same year of famine in which Isaac came to Gerar, since he is said to have been them a "long time", Genesis 26:8; before this sowing and plenty upon it were. This increase is far from being incredible; for Pliny (d), besides instances he gives of an hundred fold, says, that in a field at Byzacium in Africa one bushel produced one hundred and fifty bushels; and from the same place, the deputy of Augustus there sent him from one grain very few less than four hundred, and to Nero three hundred stalks from, one grain. Herodotus (e) speaks of a country, near to the place where the Euphrates runs into the Tigris, on which the city Ninus was, which nowhere failed of producing two hundred fold, and the better sort of it even three hundred; see Matthew 13:23,
and the Lord blessed him; and prospered and succeeded all his endeavours; and this was the true reason of the fertility of the land he manured and sowed.
(d) Nat. Hist. l. 11. c. 10. (e) Clio sive, l. 1. c. 193.

God blessed Isaac. Be it observed, for the encouragement of poor tenants who occupy other people's lands, and are honest and industrious, that God blessed him with a great increase. The Philistines envied Isaac. It is an instance of the vanity of the world; for the more men have of it, the more they are envied, and exposed to censure and injury. Also of the corruption of nature; for that is an ill principle indeed, which makes men grieve at the good of others. They made Isaac go out of their country. That wisdom which is from above, will teach us to give up our right, and to draw back from contentions. If we are wrongfully driven from one place, the Lord will make room for us in another.

Then Isaac sowed in that land--During his sojourn in that district he farmed a piece of land, which, by the blessing of God on his skill and industry, was very productive (Isaiah 65:13; Psalm 37:19); and by his plentiful returns he increased so rapidly in wealth and influence that the Philistines, afraid or envious of his prosperity, obliged him to leave the place (Proverbs 27:4; Ecclesiastes 4:4). This may receive illustration from the fact that many Syrian shepherds at this day settle for a year or two in a place, rent some ground, in the produce of which they trade with the neighboring market, till the owners, through jealousy of their growing substance, refuse to renew their lease and compel them to remove elsewhere.

Isaac's Increasing Wealth. - As Isaac had experienced the promised protection ("I will be with thee," Genesis 26:3) in the safety of his wife, so did he received while in Gerar the promised blessing. He sowed and received in that year "a hundred measures," i.e., a hundred-fold return. This was an unusual blessing, as the yield even in very fertile regions is not generally greater than from twenty-five to fifty-fold (Niebuhr and Burckhardt), and it is only in the Ruhbe, that small and most fruitful plain of Syria, that wheat yields on an average eighty, and barley a hundred-fold. Agriculture is still practised by the Bedouins, as well as grazing (Robinson, Pal. i. 77, and Seetzen); so that Isaac's sowing was no proof that he had been stimulated by the promise of Jehovah to take up a settled abode in the promised land.

Isaac received an hundred fold - And there seems to be an emphasis laid upon the time; it was that same year when there was a famine in the land; while others scarce reaped at all, he reaped thus plentifully.