'Walled' in the Bible

And if any one sell a dwelling-house in a walled city, then he shall have the right of redemption up to the end of the year of the sale thereof; for a full year shall he have the right of redemption.

But if it be not redeemed until a whole year is complete, then the house that is in the walled city shall be established for ever to him that bought it, throughout his generations: it shall not go out in the jubilee.

Only, the people are strong that dwell in the land, and the cities are walled, very great; moreover we saw the children of Anak there.

Whither shall we go up? Our brethren have made our hearts melt, saying, They are a people greater and taller than we; the cities are great and walled up to heaven; and moreover we have seen the sons of the Anakim there.

Hear, Israel! Thou art to pass over the Jordan this day, to enter in to possess nations greater and mightier than thou, cities great and walled up to heaven,