A.T. Robertson Commentary Revelation 13:7

"And it was given unto him to make war with the saints, and to overcome them: and there was given to him authority over every tribe and people and tongue and nation." — Revelation 13:7 (ASV)

To make war with the saints and to overcome them (ποιησα πολεμον μετα των αγιων κα νικησα αυτους). This clause with two epexegetical first aorist active infinitives (πολεμησα and νικησα) is omitted in A C P, but probably by ομοεοτελευτον (like ending) because of the repetition of εδοθη. The words seem to come from Da 7:21,23. There was no escape from the beast's rule in the Mediterranean world. See 5:9 for the phrases here used, there for praise to the Lamb.