Expositor's Bible Commentary Commentary Revelation 13:5

"and there was given to him a mouth speaking great things and blasphemies; and there was given to him authority to continue forty and two months." — Revelation 13:5 (ASV)

(See comments on v.1.) The period of the beast’s authority is given as “forty-two months,” the same period already referred to in 11:2–3; 12:6, 13 .