And the blood of the paschal oblation, (like) the matter of circumcision, shall be a bail for you, to become a sign upon the houses where you dwell; and I will look upon the worth of the blood, and will spare you; and the angel of death, to whom is given the power to destroy, shall have no dominion over you in the slaughter of the Mizraee.
The Blood of Passover and the Blood of Circumcision
Targum Pseudo-Jonathan on Exodus 12:13