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Use "take heed" in a sentence
"“Let him that thinketh he stand take heed lest he fall.”"
""We've got to get John Kagi down here - he'll take heed of Kagi!""
"In 1660, according to Gookin, at a great feast and dance, he made his farewell speech to his people, in which he said, that as he was not likely to see them met together again, he would leave them this word of advice, to take heed how they quarrelled with their English neighbors, for though they might do them much mischief at first, it would prove the means of their own destruction."