NET

5 The beast was given a mouth speaking proud words and blasphemies, and he was permitted to exercise ruling authority for forty-two months.

Darby

5 And there was given to it a mouth, speaking great things and blasphemies; and there was given to it authority to pursue its career^D9569 forty-two months.

Darby Bible Notes

career - Poieo. see Rom. 1.32. Or 'to work,' or 'act,' 'practised and prospered' is said in Dan. 8.12,24.

KJV

5 And there was given unto him a mouth speaking great things and blasphemies; and power was given unto him to continue^K7315forty [and] two months.

KJV Bible Notes

to continue: Or, to make war.