'High' in the Bible

Now Jericho [a fortified city with high walls] was tightly closed because [of the people’s fear] of the sons of Israel; no one went out or came in.

He shall live in that city until he has stood before the congregation for judgment [and if acquitted of murder he must stay there], until the death of the one who is the high priest in those days. Then the offender (manslayer) shall return to his own city and his own house from which he fled.’”