'Burden Of The Lord' in the Bible

'When this people, or the prophet, or a priest, shall ask you, saying, "What is the burden of the LORD?" Then you shall tell them, "You are the burden, and I will cast you off," says the LORD.

As for the prophet, and the priest, and the people, who shall say, "The burden of the LORD," I will even punish that man and his house.

You shall mention the burden of the LORD no more: for every man's own word shall be his burden; for you have perverted the words of the living God, of the LORD of hosts our God.

But if you say, "The burden of the LORD"; therefore thus says the LORD: Because you say this word, "The burden of the LORD," and I have sent to you, saying, "You shall not say, 'The burden of the LORD'";