'Burden Of The Lord' in the Bible

And when this people, or the prophet, or a priest, shall ask you, saying, What is the burden of the LORD? you shall then say unto them, What burden? I will even forsake you, says the LORD.

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

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

But since 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 unto you, saying, You shall not say, The burden of the LORD;