'Take Heed' in the Bible

Take heed that ye do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in heaven.

Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees.

Take heed that ye despise not one of these little ones; for I say unto you, That in heaven their angels do always behold the face of my Father which is in heaven.

And Jesus answered and said unto them, Take heed that no man deceive you.