'Heed' in the Bible

And he said unto them, Take heed what ye hear: with what measure ye mete it shall be measured unto you; and more shall be given unto you.

And he charged them, saying, Take heed, beware of the leaven of the Pharisees and the leaven of Herod.

And Jesus began to say unto them, Take heed that no man lead you astray.

But take ye heed to yourselves: for they shall deliver you up to councils; and in synagogues shall ye be beaten; and before governors and kings shall ye stand for my sake, for a testimony unto them.

But take ye heed: behold, I have told you all things beforehand.

Take ye heed, watch and pray: for ye know not when the time is.