There will be no curse any more. The throne of God and of the Lamb will be in it, and his servants serve him.
St. John has not yet done with this copious description of the New Jerusalem, but here he closes it by doing these two things, 1. He shows what shall not be found there: there shall be no curse, no accursed person, or accursed thing, no sin, nor any thing sinful, that deserves the curse; and there shall be no night there, no darkness of ignorance...
no more curse--of which the earnest shall be given in the millennium (Zac 14:11). God can only dwell where the curse and its cause, the cursed thing sin (Jos 7:12), are removed. So there follows rightly, "But the throne of God and of the Lamb (who redeemed us from the curse, Gal 3:10, Gal 3:13) shall be in it." Compare in the millennium, Eze 48:35. serve him--with worship (Rev 7:15).
Verse 3. And there shall be no more curse. This is doubtless designed to be in strong contrast with our present abode; and it is affirmed that what now properly comes under the name of a curse, or whatever is part of the curse pronounced on man by the fall, will be there unknown.