Exodus 9:18

Context9:18 I am going to cause very severe hail to rain down 1 about this time tomorrow, such hail as has never occurred 2 in Egypt from the day it was founded 3 until now.
Exodus 10:14
Context10:14 The locusts went up over all the land of Egypt and settled down in all the territory 4 of Egypt. It was very severe; 5 there had been no locusts like them before, nor will there be such ever again. 6
1 tn הִנְנִי מַמְטִיר (hinÿni mamtir) is the futur instans construction, giving an imminent future translation: “Here – I am about to cause it to rain.”
2 tn Heb “which not was like it in Egypt.” The pronoun suffix serves as the resumptive pronoun for the relative particle: “which…like it” becomes “the like of which has not been.” The word “hail” is added in the translation to make clear the referent of the relative particle.
3 tn The form הִוָּסְדָה (hivvasdah) is perhaps a rare Niphal perfect and not an infinitive (U. Cassuto, Exodus, 117).
4 tn Heb “border.”
5 tn This is an interpretive translation. The clause simply has כָּבֵד מְאֹד (kaved mÿ’od), the stative verb with the adverb – “it was very heavy.” The description prepares for the following statement about the uniqueness of this locust infestation.
6 tn Heb “after them.”