asphalia

1. Offering oneself as a guarantee, usually for another.

2. Asphalia, in Latine Securitas and Certitudo, is a forme of speech by which the speaker persuadeth a securitie and safetie to his hearer by offering himselfe a suretie for the confirmation of his warrant. (Peacham)

1. After slaying Caesar, Brutus attempts to appease the upset Romans, concluding with this instance of asphalia:

With this I depart, that, as I
slew my best lover for the good of Rome, I have the
same dagger for myself, when it shall please my
country to need my death.
—Shakespeare, Julius Caesar 3.2.44-47 (Silva Rhetoricae)

2. An example of Juda persuading his father Jaconb to let Benjamin his yongest sonne go into Aegypt with the rest of his brothers, who used this forme of speech, saying: “I will be suerty for him, of my hand shalt thou require him, if I bring him not to thee, and set him before thee, then let me beare the blame for ever.” Ge.49.9. (Peacham)

2. My blood for thy blood, my life for thy life, my soule for thy soule. (Peacham)