Lose Your Soul With Mine

William Branham was aware of the Bible's warnings about false prophets and those with itching ears who choose to listen to them.  For most Christians familiar with the Bible, it is a choice between spiritual life or death.  Branham warned his followers that their souls were now spiritually bound to his; if he was a false prophet, their souls would be lost and in danger of hell fire.

I’ve got to leave here. You’ve got to leave here. And if I go as a false prophet, I’ll lose my own soul and lose yours with me.
Branham, William. 1959, December 19. Questions And Answers On The Holy Ghost (59-1219). 

Two years prior to issuing this warning, however, William Branham was forced to publicly admit that one of his prophecies had in fact failed.  In 1954, Branham had prophesied that his arrival to the country of India would result in a mass conversion of the country to Christianity.  According to the prophecy, "tens of thousands times thousands" would be saved, which would make global news.

Mark my word; write it in the pages of your Bible, for it's THUS SAITH THE LORD, "Remember, when we land in India, you're going to hear of tens of thousands times thousands being saved." The Holy Spirit has said it; I've wrote it here in my Bible; it's wrote in tens of thousands of Bibles right here, like the resurrection of the little boy. By a vision that He said, "There's three hundred thousand of them in there." And you see if that isn't right. There's how the Gospel's going to be preached just overnight. She'll just sweep like that from place to place.
Branham, William.  1954, May 15.  Questions and Answers.  (54-0515)

This prophecy, however, did not come to pass.  In 1957, William Branham was forced to publicly admit that his "India Prophecy" had failed.

As many of you might know, the Indian trip wasn't the success that it should've been, because I failed to follow the leading of the Holy Spirit, and never recognized it after He give me a vision to go to Africa first and then to India. And—and some of the brethren said, "Oh, just... We can't get Africa together, so... Brother Roberts has just been down there, so take off to India." And under the influence of my brethren, well maybe taught... But no matter what someone influences you, if God has told you something different... And now, judge it by the Word (See?), by the Word, and then go.
Branham, William.  1957, Jan 26.  India Trip Report.  (57-0126B)

According to Deuteronomy's instructions for identifying a false prophet, combined with William Branham's own warning, the souls of every person listening were lost.  Deuteronomy's test for identifying a false prophet is simple: if the prophecy does not come to pass, then the prophet is false.

when a prophet speaketh in the name of the Lord, if the thing follow not nor come to pass, that is the thing which the Lord hath not spoken, but the prophet hath spoken it presumptuously; thou shalt not be afraid of him.
Deuteronomy 18:22