Numbers 13:28Nevertheless the people be strong that dwell in the land, and the cities are walled, and very great: and moreover we saw the children of Anak there.
Deuteronomy 1:28Whither shall we go up? our brethren have discouraged our heart, saying, The people is greater and taller than we; the cities are great and walled up to heaven; and moreover we have seen the sons of the Anakims there.
Hebrews 11:30By faith the walls of Jericho fell down, after they were compassed about seven days.