Purity Seals When a unit including a model wearing Purity Seals falls back, roll one extra D6 for the fall back distance, and then pick the D6 results you want.
Righteous Zeal If a Black Templars unit ever has to fall back, it will not fall back. Instead, the unit moves towards the nearest enemy unit using the same distance they would have moved if they had fallen back. If this movement takes the unit into contact with an enemy unit, the Black Templars count as making a sweeping advance, with all the benefits and disadvantages that this entails. In close combat, Black Templars automatically pass any Morale checks they have to make and may never use the optional voluntarily fall abck rules.