The complex episode of mei meriva, which cost Moshe Rabbeinu entrance to the land of Israel, is explained by Rabbi Hershel Reichman, as a product of the dual nature of miracles.
In Parshat Chukat, we learn about Parah Adumah. The chok of Parah Adumah is in essence the mystery of death, where on one hand there is a spiritual loss and yet G-d Himself is completely within the picture. This Torah class is available online in streaming video.