"from the blood which is in the saf": What is the intent of this? Is it not already written (Ibid.)? From (Ibid. 7) "And they shall take from the blood," I might think that there is one dipping for all (the touchings). It is, therefore, written "and you shall touch the lintel and the two door-posts from the blood which is in the saf. For each touching a (separate) dipping.