'Take Heed' in the Bible

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

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

And Jesus answering them began to say, Take heed lest any man deceive you:

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