Revelation 11:3

11:3 And I will grant my two witnesses authority ¹  to prophesy for 1,260 days, dressed in sackcloth.

Revelation 11:10

11:10 And those who live on the earth will rejoice over them and celebrate, even sending gifts to each other, because these two prophets had tormented those who live on the earth.

[11:3]  ¹ tn The word “authority” is not in the Greek text, but is implied. “Power” would be another alternative that could be supplied here.