G.R. Miller is a mathematician and a theologian.
He was active in Christian missionary work at a particular point of his life but he soon began to discover many inconsistencies in the Bible.
In 1978, he happened to read the Qur'an expecting that it, too, would contain a mixture of truth and falsehood.
He discovered to his amazement that the message of the Qur'an was precisely the same as the essence of truth that he had distilled from the Bible and thus he became a Muslim.