Aliya Summary: The Torah now discusses the Thanksgiving Offering, brought by an individual who survived a perilous circumstance. We then learn about various grounds for the invalidation of a sacrifice, such as impurity or improper thoughts on the part of the priest performing the service. We are then commanded not to consume blood or any of the fats offered on the altar. The prohibition against eating these fats applies to all domesticated animals. The section wraps up with the portions of meat the priest is given from the Peace Offering. With this we conclude the laws of sacrifices.
It’s interesting to note that the most severe lapse in a kohen’s obligation is one concerning time. A lapse regarding place of the eating of the offering, for example, is less severe (punishment-wise). the sanctity of time is more important than that of place. (from of a long-time-ago drasha by Rabbi Fabian Schonfeld.)