Is this partly because preaching the Word is considered to be a means of grace?

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Erick Bohndorf PCA, KS
http://qayaqtraveler.blogspot.com/
Jeremiah 23:16,17, "Thus says the Lord of hosts: “Do not listen to the words of the prophets who prophesy to you, filling you with vain hopes. They speak visions of their own minds, not from the mouth of the Lord. 17They say continually to those who despise the word of the Lord, ‘It shall be well with you’; and to everyone who stubbornly follows his own heart, they say, ‘No disaster shall come upon you."