a response for poor sinners, critical scholarship interprets the section as indicating that, historically, an earlier sacrificial offering, of a lamb, was increasingly being replaced, over time, by a pair of turtledoves. Modification of this kind is also thought to be found twice in succession within Leviticus 5:1-13. A sacrifice involving a lamb or kid (of a goat) is described at Leviticus 5:1-6, whereas Leviticus 5:7-10 states that two turtledoves or two pigeons suffice, whereas Leviticus 5:11-13 further states that mere flour is sufficient. Biblical critics assert that it is difficult to see why anyone would go to the extent of bringing a lamb, when flour is enough, and similarly, if flour is sufficient, they assert that mentioning more costly losses, such as lambs, would be unexpected from a single writer of the law. Textual criticism identifies quite different writing styles between each of these three sections, the first section not detailing any ritual whatsoever, merely what should be brought, the second giving quite detailed instructions of ritual, and each being progressively more verbose, the first merely writes shall make an atonement for him concerning his sin, whereas the third produces shall make an atonement for him as touching his sin that he hath sinned in one of these. For these reasons, critical scholars usually identify Leviticus 5:7-10 as a later addition to Leviticus 5:1-6, and Leviticus 5:11-13 as an even later addition, reflecting the ritual gradually being watered down over time. Provenance Despite the disparate nature of the Priestly Code, it is nevertheless believed possible to identify a few authors who have worked on more than one of the laws. The most noticeable of these is an author who writes, unlike the remainder, in the style of a teacher, and is consequently sometimes referred to, in critical scholarship, as the priestly teacher (Pt). The laws typically ascribed to this supposed author are either started by a phrase such as this is the law of..., as is the case, for example, with Numbers 19:14-22; or end with a colophon of the form this is the law of [subject A], [summary of the law concerning subject A], [subject B], [summary of the law concerning subject B], ..., as is the case with Numbers 6:1-21, and the more naturalistic parts of Numbers 5 (the portion thought by critics to be the later version of the remainder). Another aspect of the "priestly teacher's"