In 1957, Patrick W. Skehan proposed four chronological stages in the writing of the name of God in some books of the Greek Septuagint: 1. Ιαω; 2. in the usual Aramaic script; 3. 𐤉𐤅𐤄𐤅 in Paleo-Hebrew script; and finally 4. κύριος. Writing of the then as yet unpublished manuscript 4QpapLXXLevb, which contains the form Ιαω, he said: "This new evidence strongly suggests that the usage in question goes back for some books at least to the beginnings of the Septuagint rendering." By 1980, he had modified his view to the extent of explicitly excluding the prophetic books, much of which, he said, "comes to hand with its earliest attainable stage showing leanings toward Κύριος ὁ θεός as an equivalent for אדני יהוה, in accordance with the Palestinian "qěrē". Also, as far back as it is possible to go, the Kyrios term is employed in these books for both יהוה and אדני, on the basis of the spoken Adonay that stood for either separately [...] This cannot have come about as exclusively the work of Christian scribes".