Yirmeyah 20:8-9

For since I spoke, I cried out, I cried chamas and destruction; because the Devar HASHEM was made a cherpah (reproach) unto me, and a derision, all day long. Then I said, I will not make mention of Him, nor speak any more in Shmo. But His word was in Mine lev as a burning eish shut up in my atzmot, and I was weary of holding back, and I could not.