He was a Oneness Pentecostal, which means he teaught that Jesus is the Father and is the Holy Spirit as well. That Jesus manifiested Himself as the Father in the OT and Jesus the Son in the Gospels, then once He asended, He came back as the Holy Spirit. That the Father, Son, Holy Spirit are just titles of the manifestation of God. One has to be baptized in the name of Jesus and speak in tounges to be saved. If you do not speak in tongues you are not saved.
Yes he was a false teacher, he was part of the healing movment of the 50's, 60's and 70's with T. L. Osborn, Oral Roberts, A. A. Allen, F. F. Bosworth, Gordon Lindsay, Jack Cole, W. V. Grant, John G. Lake, Smith Wigglesworth and Peter Popoff. There were others as well but they did not get as popular as these guys.
Here is his claim to fame, he claims that on May 7th 1946 he was visited by an angel here part of what he said he seen. "there hung a great star. However it did not have five points like a start, but looked more like a ball of fire or light shining down on the floor, which startled me again. . . .He appeared to be a man who, in human weight, would weigh about 200 pounds, clothed in a white robe. He had a smooth face, no beard, dark hair down to his shoulders, rather dark-complexioned, with a very pleasant countenance, and coming closer, his eyes caught with mine. Seeing how fearful I was, he began to speak. "Fear not. I am sent from the presence of Amighty God to tell you that your peculiar life and your misunderstood ways have been to indicate that God has sent you to take a gift of divine healing to people of the world. IF YOU WILL BE SINCERE, AND CAN GET THE PEOPLE TO BELIEVE YOU, NOTHING SHALL STAND BEFORE YOUR PRAYER, NOT EVEN CANCER.
A quote from Gordon Lindsay, William Branaham: A Man Sent from God (4th ed; Jeffersonville, Indians: William Branaham, 1950) 77. I got this out of a book called All Things Are Possible by David Edwin Harrell, Jr. It has a picture that also caused Branaham to become popular among Penecostal/Charismatic healing believers, because in the picture it has a halo over his head. The book only tell what the writer thought were the good thing, because he does write about Miricla Valley, part of A. A.Allen's ministry, but does not mention the death there.
But he does write about the brakes and the way some made shadey moves to start their own ministry using money from other ministries. I also like that the writer added that Grodon Gee a teacher in the AoG rebuked some of these guy for riding roughshod over the people. The book is dated, it talks about how people were living in home that cost $40,000.00 to $50,000.00 as a bad thing, now a days that a steal.
I could not believe it, Amazon sells the book for $22.54, you can see the picture of Branaham with the halo over his head.