Shabbat Parah, Shabbat HaHodesh and Shabbat HaGadol.
God will redeem the Israelites for His own sake.
A purification ritual using the ashes of a cow.
The Torah law about the red heifer was given because it anticipated the temporal nature and limitation of what Miriam had to offer.
Jewish sources suggest tears and tzedakah [charity] as two modern replacements for the Red Heifer.
Because of his position of leadership, Moses is judged extremely harshly when he sins.