A.T. Robertson Commentary Revelation 5:10

"and madest them [to be] unto our God a kingdom and priests; and they reign upon earth." — Revelation 5:10 (ASV)

Madest (εποιησας). First aorist active indicative of ποιεω, a prophetic use anticipating the final result.

A kingdom and priests (βασιλειαν κα ιερεις). As the correct text in 1:6.

They reign (βασιλευουσιν). Present active indicative, futuristic use, though Aleph P have the future βασιλευσουσιν (shall reign) as in 20:6.