Will believers reign on the earth in the Millennium?

To whom does "us" and "we" refer in Revelation 5:10, "And hast made us unto our God kings and priests: and we shall reign on the earth"?

The manuscripts used in Darby’s translation, for instance, change "we" to "them" and omit "us." The sense of the passage, therefore, is that the Lamb has made those He redeemed with His blood (verse 9) kings and priests to God; those redeemed ones will reign on the earth. We need not be upset to learn that, in subsequent years, scholars found more reliable manuscripts than those used for our beloved Authorized Version. God’s truth stands immutable: "For ever, 0 Lord, Thy word is settled in heaven" (Psalm 119:89). The manuscript changes are very minor and, as in this passage, affect no doctrine, but only our understanding of the passage.

D. Oliver