NET
18 I am going to cause very severe hail to rain down about this time tomorrow, such hail as has never occurred in Egypt from the day it was founded until now.
Darby
18 Behold, to-morrow about this time I will cause it to rain a very grievous hail, such as hath not been in Egypt since its foundation until now.
KJV
18 Behold, to morrow about this time I will cause it to rain a very grievous hail, such as hath not been in Egypt since the foundation thereof even until now.