Passage
having a wall great and high; having twelve gates, and at the gates twelve angels; and names written thereon, which are [the names] of the twelve tribes of the children of Israel:
having a wall great and high; having twelve gates, and at the gates twelve angels; and names written thereon, which are [the names] of the twelve tribes of the children of Israel:
Revelation 21:10 And he carried me away in the Spirit to a mountain great and high, and showed me the holy city Jerusalem, coming down out of heaven from God,
Revelation 21:11 having the glory of God: her light was like unto a stone most precious, as it were a jasper stone, clear as crystal:
Revelation 21:12 having a wall great and high; having twelve gates, and at the gates twelve angels; and names written thereon, which are [the names] of the twelve tribes of the children of Israel:
Revelation 21:13 on the east were 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", "wall", "great", "high", "twelve", and "gates". It is saying that the verse draws attention to "having" and "wall", 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 light..." into verse 13's "on the east were three gates and...", so "having" and "wall" 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 "wall" with trust shaped by these words, not by a vague optimism outside the passage.