'Seventh Year' in the Bible

Beware that there is not a thought in your wicked heart, saying, The seventh year, the year of release, is at hand, and your eye may be evil against your poor brother, and you give him nothing. And he may cry to Jehovah against you, and it is sin to you.

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