Cross reference
Deuteronomy 3:5
5 All these `are' cities fenced with high walls, two-leaved doors and bar, apart from cities of villages very many;
Numbers 13:28
28 only, surely the people which is dwelling in the land `is' strong; and the cities are fenced, very great; and also children of Anak we have seen there.
Deuteronomy 1:28
28 whither are we going up? our brethren have melted our heart, saying, A people greater and taller than we, cities great and fenced to heaven, and also sons of Anakim -- we have seen there.
Hebrews 11:30
30 by faith the walls of Jericho did fall, having been surrounded for seven days;