Exodus 9:28

“Entreat the Lord, for it is enough, etc.] Hail, thunder, and lightning enough; or pray that this may be enough, and thought sufficient, and that there may be no more; or “entreat the Lord, and much” f256; pray, and pray much, pray earnestly and without intermission until the plague ceases: that there be no more mighty thunderings and hail; or “voices of God” f257; for thunder is the voice of God, and these thunderings or voices were very loud, the claps were very terrible to hear, and the hail was very grievous and heavy, and the whole was very amazing and frightful, and the more to Pharaoh, who perhaps had never heard the voice of thunder, or seen an hail storm before, even a common one,…”

“With the plague of hail begins the last series of plagues, which differ from the former both in their severity and their effects. Each produced a temporary, but real, change in Pharaoh’s feelings. Exodus 9:14 All my plagues - This applies to all the plagues which follow; the effect of each was foreseen and foretold. The words “at this time” point to a rapid and continuous succession of blows. The plagues which precede appear to have been spread over a considerable time; the first message of Moses was delivered after the early harvest of the year before, when the Israelites could gather stubble, i. e. in May and April: the second mission, when the plagues began, was probably toward the end of…”

“Entreat: Exo 8:8, Exo 8:28, Exo 10:17; Act 8:24 mighty thunderings: Heb. voices of God, Psa 29:3, Psa 29:4 ye shall: Exo 11:1 Exodus 9:29”