The accounts of the ancient Norse gods show deities who are not always godlike, heroic, or even effective. Their limitations may be caused by the authors' reluctance to be associated with the deities they wrote about. As the texts were written by Christians (such as Snorri Sturluson, author of the Prose Edda) and the Christians who copied the Codex Regius, he was writing to preserve the memory of an ancient belief system that was no longer relevant. Alternatively, the fallibility of these gods may reflect the ritual practices of the old Norse peoples or the world view of the contemporary Icelandic audience.
You should make an argument about one or more of the more sophisticated elements of primary source analysis – Purpose, Bias, Absence, Reliability. For instance, you may argue about the biases inherent in the texts, or about the reliability or lack thereof within the Poetic Edda and Prose Edda. You should be making an historical argument though, and state it clearly in a thesis statement.