Illustrations of Bible Truth by H.A. Ironside, Moody Press, 1945, p. 40
On one occasion Col. Robert G. Ingersoll, the agnostic lecturer of the last century, was announced to give an address on hell. He declared he would prove conclusively that hell was a wild dream of some scheming theologians who invented it to terrify credulous people. As he was launching into his subject, a half-drunken man arose in the audience and exclaimed, "Make it strong, Bob. There's a lot of us poor fellows depending on you. If you are wrong, we are all lost. So be sure you prove it clear and plain."
No amount of reasoning can nullify God's sure Word. He has spoken as plainly of a hell for the finally impenitent as of a heaven for those who are saved.