Jeremiah 20:9

If I say, “I will not mention Him or speak any more in His name,” His message becomes a fire burning in my heart, shut up in my bones, and I become weary of holding it in, and I cannot prevail.

Then I said, I will not make mention of him, nor speak any more in his name. But his word was in mine heart as a burning fire shut up in my bones, and I was weary with forbearing, and I could not stay.