And he exerciseth all the power of the first beast before him; all the authority.., in his sight (Revised Version). That is, his influence over men, though less directly asserted, is equal to that of the first beast.
And he exercises this influence "in his sight," that is, by his permission and contemporaneously with the exercise of power by the first beast. So Christians both of St. John's and of our own time seek to escape direct persecution by justifying to themselves their unworthy compliance with the unrighteous requirements of the world.
And causeth the earth and them which dwell therein to worship the first beast, whose deadly wound was healed. Here we have an explanation of the two preceding clauses. Though like a lamb in appearance, his words denote his deadly nature, which is shown by causing men to worship the first beast; and thus he exercises the authority of the first beast, and accomplishes his work.
Those who dwell in the earth are the worldly, not faithful Christians, but those "whose names are not written in the book of life of the Lamb" (see on verse 8). This beast causes men to worship the first beast by persuading them into a compliance with his will, and making them pay homage to him.
For this reason he is called in Revelation 16:13 the "false prophet.'' (For "whose deadly wound was healed," see on Revelation 16:3.