'Seventh Year' in the Bible

Beware that there not be a base thought in thy heart, saying, The seventh year, the year of release, is at hand, and thine eye be evil against thy poor brother, and thou give him nothing, and he cry to LORD against thee, and it be

If thy brother, a Hebrew man, or a Hebrew woman, is sold to thee, and serves thee six years, then in the seventh year thou shall let him go free from thee.