"Now faith is the assurance of things hoped for, the conviction of things not seen."

(Heb 11:1)

By which he means the assurance of eschatology (cf. 10:34-39). Conviction concerning the coming reward (11:6, 26), the coming city (v. 10, 16), the coming homeland (v. 14), and the better resurrection (v. 35).

Jewish eschatology thus creates hope which is how the saints "preserve their souls" (10:39). - John P Harrigan