Wall

Cities were surrounded by walls, as distinguished from "unwalled
villages" (Ezek. 38:11; Lev. 25:29-34). They were made thick and
strong (Num. 13:28; Deut. 3:5). Among the Jews walls were built
of stone, some of those in the temple being of great size (1
Kings 6:7; 7:9-12; 20:30; Mark 13:1, 2). The term is used
metaphorically of security and safety (Isa. 26:1; 60:18; Rev.
21:12-20). (See FENCE T0001321.)