Bush graduated from Dartmouth College in 1818, and then studied theology at Princeton Theological Seminary, where he was a tutor 1823–1824. He was ordained in the Presbyterian ministry, spent four years as a Christian missionary in Indiana, and in 1831 became professor of Hebrew and oriental literature at New York University. His first book The Life of Mohammed was the first American written biography of the religious leader. It refers to Muhammad as "remarkable" and “irresistibly attractive", but is a largely negative assessment of him, showing him up as a fraud and hoaxer. It also takes a dim view of the state of Christianity of Muhammad's age. The book fell out of print, but became briefly controversial in Egypt in 2004. In 1844 Bush published a book entitled The Valley of Vision; or, The Dry Bones of Israel Revived. In it he denounced “the thralldom and oppression which has so long ground them to the dust,” and called for “elevating” the Jews “to a rank of honorable repute among the nations of the earth” by restoring the Jews to the land of Israel where the bulk would be converted to Christianity. This, according to Bush, would benefit not only the Jews, but all of mankind, forming a “link of communication” between humanity and God. “It will blaze in notoriety....It will flash a splendid demonstration upon all kindreds and tongues of the truth.” Also in 1844, he published a monthly magazine called Hierophant, devoted to the elucidation of scriptural prophecies, and he issued, in New York, a work entitled Anastasis, in which he opposed the doctrine of the literal resurrection of the body. Attacks upon this latter work, which attracted much attention, he answered in The Resurrection of Christ. In 1845 he embraced Swedenborgianism and went on to write many defenses of his new faith. He translated and published the diary of Emanuel Swedenborg in 1845, and became editor of the New Church Repository.
The Soul; or an Inquiry into Scriptural Psychology, as developed by the use of the terms, Soul, Spirit, Life, etc., viewed in its bearings on The Doctrine of the Resurrection
Mesmer and Swedenborg Here he argued that the doctrines of Swedenborg were corroborated by the developments of mesmerism.
