Midrash su Salmi 78:47

What may this be compared to? To two powerful legionaries who have despised each other for a long time. When their king became involved in a war, he made peace between them so that they would go forth together to fulfill the king’s command. Similarly, though fire and hail are hostile to each other, when the time for war with Egypt came, the Holy One, blessed be He, made peace between them and they smote Egypt. Hence it is said: The fire flashing up amidst the hail. When an Egyptian was seated he would be pummeled by hail; when he arose he would be scorched by fire in conformity to the punishments meted out to wicked men in the netherworld, as it is said: He destroyed their vines with hail, and their sycamore trees with frost (Ps. 78:47). R. Judah the son of Shalum said: What is the meaning of their sycamore trees with frost (ba-hanamal)? Ba indicated that it came; han, that it alighted upon them; mal, that it cut everything down. R. Phinehas declared: It descended like an axe cutting down the trees.

(Exod. 9:22:) THEN THE LORD SAID UNTO MOSES: HOLD OUT YOUR ARM <TOWARD THE HEAVENS > [THAT THERE MAY BE HAIL IN ALL THE LAND OF EGYPT]. Why did he smite them with hail? Because the Egyptians thought that the Israelites were their vinedressers.¹⁰⁵Since the vines of the Israelites would also have been subject to hail damage, the Egyptians believed that the Holy One would not send hail; but the Holy One did send hail and further demonstrated his power by sparing Israel’s vines in the land of Goshen. See Exod. 9:25. David said (in Ps. 78:47): HE KILLED THEIR VINES WITH HAIL, AND THEIR SYCAMORES WITH HANAMAL.¹⁰⁶Several English versions translate hanamal as “frost”; but since the word appears nowhere else in Scripture, it is well suited to speculation concerning its meaning. And how did it come down? R. Pinhas and R. Judah bar Shallum the Levite differ.¹⁰⁷Exod. R. 12:4, 6; cf. Cant. R. 3:11:1; M. Pss. 78:13; 105:10. The first of them said: It came down like the worm and cut down the trees. (Ps. 78:47:) HE KILLS THEIR VINES WITH HAIL,… And the other said: It came down like the hanamal. (Ps. 78:47:) AND THEIR SYCAMORES WITH HANAMAL.¹⁰⁸According to Exod. R. 12:4, R. Judah bar Shallum derived the meaning from the phrase WITH HANAMAL (bahanamal), which he interprets to mean, “It came (ba), it came to rest (nah), it cut off (mal)”; but R. Pinhas believed that the hail came down like an axe (pilqin, from the Gk.: pelekus) and cut down the trees. Similarly Tanh., Exod. 2:14. Cf. Yalqut Shim‘oni, Pss. 820, where these two views are attributed to other authorities. It is written (in Exod. 9:32): BUT THE WHEAT AND THE SPELT WERE NOT HURT.¹⁰⁹See Exod. R. 12:6. It is simply that it came down upon each and every thing according to its power (to exhibit the wondrous works of Holy One): upon the cattle according to their power, upon the herbage according to its power, and upon humanity according to its power. What is written above on the matter (in Exod. 9:16)? BUT NEVERTHELESS, FOR THIS REASON I HAVE PRESERVED YOU,… I have preserved you to recount my wondrous works. Thus I did not cause you to die in the first plagues, (ibid., cont.:) IN ORDER TO SHOW YOU MY POWER AND IN ORDER FOR MY NAME TO RESOUND IN ALL THE WORLD.