Passage
having a great and high wall; having twelve gates, and at the gates twelve angels, and names inscribed, which are those of the twelve tribes of [the] sons of Israel.
having a great and high wall; having twelve gates, and at the gates twelve angels, and names inscribed, which are those of the twelve tribes of [the] sons of Israel.
Revelation 21:10 And he carried me away in [the] Spirit, [and set me] on a great and high mountain, and shewed me the holy city, Jerusalem, coming down out of the heaven from God,
Revelation 21:11 having the glory of God. Her shining [was] like a most precious stone, as a crystal-like jasper stone;
Revelation 21:12 having a great and high wall; having twelve gates, and at the gates twelve angels, and names inscribed, which are those of the twelve tribes of [the] sons of Israel.
Revelation 21:13 On [the] east three gates; and on [the] north three gates; and on [the] south three gates; and on [the] west three gates.
Revelation 21:14 And the wall of the city had twelve foundations, and on them twelve names of the twelve apostles of the Lamb.
The verse centers on "having", "great", "high", "wall", "twelve", and "gates". It is saying that the verse draws attention to "having" and "great", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 11's "having the glory of God Her shining..." into verse 13's "On the east three gates and on...", so "having" and "great" belong inside that flow. In Revelation context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "having" and "great" with trust shaped by these words, not by a vague optimism outside the passage.