Charles Ellicott Commentary Hebrews 10:35

"Cast not away therefore your boldness, which hath great recompense of reward." — Hebrews 10:35 (ASV)

Do not cast away therefore your confidence.—Rather, Do not cast away therefore your boldness, since it has a great recompence. To “cast away boldness” is the opposite of “holding fast the boldness of the hope” (Hebrews 3:6); the one belongs to the endurance of the faithful servant (Hebrews 10:32; Hebrews 10:36), the other to the cowardice of the man who draws back (Hebrews 10:38).

These verses are closely connected: Hold fast your boldness, since a great reward belongs to it; hold it fast, for he that endureth to the end shall be saved. Regarding the last word, “recompence,” see Hebrews 2:2.