Revelation 9:5

Overview - Revelation 9
At the sounding of the fifth angel, a star falls from heaven, to whom is given the key to the bottomless pit.
He opens the pit, and there come forth locusts like scorpions.
12 The first woe past.
13 The sixth trumpet sounds.
14 Four angels are let loose, that were bound.
Treasury of Scripture Knowledge

Revelation 9:5  (King James Version)
And to them it was given that they should not kill them, but that they should be tormented five months: and their torment was as the torment of a scorpion, when he striketh a man.

it was
Revelation 13:5 Revelation 13:7 Daniel 5:18-22 ; 7:6 John 19:11

they should not
That is, should not kill them as a political body, state, or empire; and accordingly, however they desolated the Greek and Latin churches, they could not extirpate them, nor gain possession of the empire.
11:7 Job 2:6

they should be

Five prophetical months, each consisting of 30 days, and each day denoting a year, amount to 150 years; and accordingly, from the time that Mohammed began to propagate his imposture A
D. 612, the building of Bagdad, when they ceased from their ravages, A
D. 763, are just 150 years.

and their