2. Mose 9:31

The account of the loss caused by the hail is introduced very appropriately in Exo 9:31 and Exo 9:32, to show how much had been lost, and how much there was still to lose through continued refusal. "The flax and the barley were smitten, for the barley was ear, and the flax was גּבעל (blossom); i.e., they were neither of them quite ripe, but they were already in ear and blossom, so that they were broken and destroyed by the hail. "The wheat," on the other hand, "and the spelt were not broken down, because they were tender, or late" (אפילת); i.e., they had no ears as yet, and therefore could not be broken by the hail. These accounts are in harmony with the natural history of Egypt. According to Pliny, the barley is reaped in the sixth month after the sowing-time, the wheat in the seventh. The barley is ripe about the end of February or beginning of March; the wheat, at the end of March or beginning of April. The flax is in flower at the end of January. In the neighbourhood of Alexandria, and therefore quite in the north of Egypt, the spelt is ripe at the end of April, and farther south it is probably somewhat earlier; for, according to other accounts, the wheat and spelt ripen at the same time (vid., Hengstenberg, p. 119). Consequently the plague of hail occurred at the end of January, or at the latest in the first half of February; so that there were at least eight weeks between the seventh and tenth plagues. The hail must have smitten the half, therefore, of the most important field-produce, viz., the barley, which was a valuable article of food both for men, especially the poorer classes, and for cattle, and the flax, which was also a very important part of the produce of Egypt; whereas the spelt, of which the Egyptians preferred to make their bread (Herod. 2, 36, 77),…

In this chapter we have an account of three more of the plagues of Egypt. I. Murrain among the cattle, which was fatal to them (Exo 9:1-7). II. Boils upon man and beast (Exo 9:8-12). III. Hail, with thunder and lightning. 1. Warning is given of this plague (Exo 9:13-21). 2. It is inflicted, to their great terror (Exo 9:22-26). 3. Pharaoh, in a fright, renews his treaty with Moses, but instantly breaks his word (Exo 9:27, etc.).