Now the word of the Lord came to Jonah the second time, saying, 2 “Arise, go to Nineveh, that great city, and preach to it the message that I tell you.” (Jonah 3:1-2)
The effectiveness of our ministry lies in preaching only the message that the LORD gives us.

Then the disciples went out and preached everywhere, and the Lord worked with them and confirmed his word by the signs that accompanied it. (Mark 16:20 NIV)
Notice, scripture says, “His word”
God will confirm His Word and not your word or my word

Therefore they stayed there a long time, speaking boldly in the Lord, who was bearing witness to the word of His grace, granting signs and wonders to be done by their hands. (Acts: 14:3)

Word of His grace
It cannot be the Word of your grace or the word of your intelligence. It has to be the word of His grace. Only then signs and wonders will follow.

10 Then God saw their works, that they turned from their evil way; and God relented from the disaster that He had said He would bring upon them, and He did not do it. (Jonah 3:10)

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