'How Long' in the Bible

Then the LORD's angel gave answer, and said, 'O LORD of Hosts, how long wilt thou be unmerciful to Jerusalem and to the cities of Judah, with whom thou hast been displeased now these seventy years?'

Then said I, 'Whither goest thou?' And he said unto me, 'To measure Jerusalem, that I may see how long and how broad it is.'