Bible Dictionary · S
Surety
One who becomes responsible for another. Christ is the surety of the better covenant (Heb 7:22). In him we have the assurance that all its provisions will be fully and faithfully carried out. Solomon warns against incautiously becoming security for another (Prov 6:1–5; Prov 11:15; Prov 17:18; Prov 20:16).
From Easton’s Bible Dictionary (1897), by Matthew George Easton.