'Beware' in the Bible

then beware lest thou forget Jehovah, who brought thee forth out of the land of Egypt, out of the house of bondage.

Beware lest thou forget Jehovah thy God, in not keeping his commandments, and his ordinances, and his statutes, which I command thee this day:

Beware that there be not 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 nought; and he cry unto Jehovah against thee, and it be sin unto thee.