“And no more will there be any curse. But the throne of God and of the Lamb will be in the city, and his slaves will render him sacred service;

Revelation 22:3,

When the Israelite priesthood became corrupt, it suffered Jehovah’s curse. (Malachi 2:2) Jerusalem’s faithless “house” was pronounced abandoned by Jesus. (Matthew 23:37-39) But in New Jerusalem, “no more will there be any curse.” (Compare Zechariah 14:11.) All its inhabitants have been tested in the fire of trials here on earth, and having gained the victory, they will have ‘put on incorruption and immortality.’ In their case, Jehovah knows, just as he knew with Jesus, that they will never fall away. (1 Corinthians 15:53, 57) Further, “the throne of God and of the Lamb” will be there, making the city’s position secure for all eternity.

28. Why do members of New Jerusalem have God’s name written on their forehead, and what thrilling prospect lies before them?

²⁸ Like John himself, all future members of that celestial city are “slaves” of God. As such, they have God’s name prominently written on their forehead, identifying him as their Owner. (Revelation 1:1; 3:12) They will count it an inestimable privilege to render him sacred service as part of New Jerusalem. While Jesus was on earth, he made a thrilling promise to such prospective rulers, saying: “Happy are the pure in heart, since they will see God.” (Matthew 5:8) How happy these slaves will be actually to behold and worship Jehovah in person!