וַתּוֹרִדֵ֥ם בַּחֶ֖בֶל בְּעַ֣ד הַֽחַלּ֑וֹן כִּ֤י בֵיתָהּ֙ בְּקִ֣יר הַֽחוֹמָ֔ה וּבַֽחוֹמָ֖ה הִ֥יא יוֹשָֽׁבֶת׃
Then she let them down by a cord through the window; for her house was upon the side of the wall, and she dwelt upon the wall.
Read kabbalistic (mystical) interpretation of Joshua 2:15: and classical mystical sources.