The wall of the city had twelve foundations bearing the names of the twelve apostles of the Lamb.
Καὶ τὸ τεῖχος τῆς πόλεως ἔχον θεμελίους δώδεκα, καὶ ἐν αὐτοῖς ὀνόματα τῶν δώδεκα ἀποστόλων τοῦ ἀρνίου.