The reason why the blood formed a cross was that there was blood in the sill of the door. ('Caph' translated basin, but it really means the sill of the door). So the hyssop branch was dipped in it and then blood was applied to the lintel, (top beam of the door), and the two side posts. Now those 4 locations for the blood form a cross. Jesus was pierced in his hands - side posts, feet - basin/sill, head with thorns - lintel.
ok, back to the Olivet
ok, back to the Olivet