thou shalt speak.

Jeremiah 1:7
But the LORD told me: "Do not say, 'I am only a child.' For to everyone I send you, you must go, and all that I command you, you must speak.

Jeremiah 26:2
"This is what the LORD says: Stand in the courtyard of the LORD's house and speak all the words I have commanded you to speak to all the cities of Judah who come to worship there. Do not omit a word.

Ezekiel 2:4-7
They are obstinate and hardhearted children. I am sending you to them, and you are to say to them, 'This is what the Lord GOD says.' . . .

Ezekiel 3:17, 18
"Son of man, I have made you a watchman for the house of Israel. Whenever you hear a word from My mouth, give them a warning from Me. . . .

Acts 20:27
For I did not shrink back from declaring to you the whole will of God.

hearken.

Jeremiah 1:19
They will fight against you but never overcome you, since I am with you to rescue you, " declares the LORD.

Isaiah 6:9, 10
And He replied, "Go and tell this people: 'Be ever hearing, but never understanding; be ever seeing, but never perceiving.' . . .

Ezekiel 3:4-11
Then He said to me, "Son of man, go now to the house of Israel and speak My words to them. . . .

also.

Isaiah 50:2
Why was no one there when I arrived? Why did no one answer when I called? Is My hand too short to redeem you? Or do I lack the strength to deliver you? Behold, My rebuke dries up the sea; I turn the rivers into a desert; the fish rot for lack of water and they die of thirst.

Isaiah 65:12
I will destine you for the sword, and you will all kneel down to be slaughtered, because I called and you did not answer, I spoke and you did not listen; you did evil in My sight and chose that in which I did not delight."

Zechariah 7:13
Therefore just as I had called and they would not listen, so when they called I would not listen, says the LORD of Hosts.