And when he opened the chotam hakhamishi, I saw underneath the Mitzbe'ach  altar  the nefashot  souls  of the ones having died al kiddush Ha-Shem, having been slain as martyrs because of the dvar Hashem and because of their solemn edut  testimony  which they had given. [Shemot 29:12; Vayikra 4:7]