Then I said, I will not make mention of him— But when I say, I will not make mention of it—then it becomes in my heart, &c. So it is said of St. Paul, that his spirit was stirred in him; and again, that a necessity was laid upon him to preach the Gospel. See Acts 17:16. 1 Corinthians 9:16. Elihu, in Job, speaks of the spirit constraining him: see Job 32:18-19 and Virgil's Eneid, 6: ver. 77. Indeed, no heat is so raging and insupportable, as that in the bosom of an honest man, upon the doing of any thing which he ought not to have done, or refraining from that which his conscience informs him he ought to do.
Related Commentaries of Jeremiah 20:9
Jeremiah 20:9
9 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.