Parshiot Behar and Bechukotai contain a supplement to the covenant at Sinai, which, alongside the deep, spiritual motivation and voluntarism associated with entering into a covenant with the Almighty, adds the reward and punishment, which both encourage and threaten, seeking to preserve the integrity of this special covenant. If parashat Mishpatim presents the side of "ahavat Hashem," parashat Bechukotai adds "yir'at Hashem," without which the covenant is not complete.