In the words of Wladyslaw Duczko, because of the multiple edits and revisions of the Chronicle, "information that was not compatible was left aside, while the elements that should be there but did not exist, were invented." Russian historian and author Igor Danilevsky mentioned that the "Rus Primary Chronicle" was more concerned with exploring the religious significance of the events rather than conveying to the reader the information about how it actually happened. As a result, a sizable portion of the text was directly borrowed from earlier works that contained a religious undertone like some Byzantine sources, and most notably, the Bible. The protagonists are frequently identified with biblical personages and so are ascribed certain relevant qualities and deeds that did not necessarily match the reality.