Some have thought this to be a scriptural expression, but it is not to be found in the Bible. It is believed to have originated in the heathen mythologies of the Hindoos in ancient India. Webster defines the term "triune" as three in one–"an epithet used to express the unity of a trinity of persons in the Godhead." We know of but one passage in the Bible that actually teaches the doctrine of a "triune God." But this passage is now conceded to be spurious by all Bible scholars. The words found in `1 John 5,7` ("in heaven the Father, the Word and the Holy Spirit, and these three are one; and there are three that bear witness in earth"), are not contained in any of the oldest Greek manuscripts. The Religious Dictionary, page 944, says: "It was not until the fourth century that the Trinitarian view began to be elaborated and formulated into a doctrine, and an endeavor made to reconcile it with the belief of the Church in one God . . . Out of the attempt to solve this problem sprang the doctrine of the Trinity . . . Trinity is a very marked feature in Hindooism, and is discernible in Persian, Egyptian, Roman, Japanese, Indian, and the most ancient Grecian mythologies."
