Adam Clarke on Ezekiel 2:4

Thou shalt say unto them, Thus saith the Lord - Let them know that what thou hast to declare is the message of the Lord, that they may receive it with reverence.

Every preacher of God's word should take heed that it is God's message he delivers to the people. Let him not suppose, because it is according to his own creed or confession of faith, that therefore it is God's word. False doctrines and fallacies without end are foisted on the world in this way. Bring the creed first to the Word of God, and scrupulously try whether it be right; and when this is done, leave it where you please; take the Bible, and warn them from God's word recorded there.