b. Immediately after the fourth warning, the writer of Hebrews invites the recipients of his letter to ‘recall the former days in which, after you were illuminated’ pointing to a time immediately following their coming into a mature understanding of the gospel of the glory of Christ−Heb. 10:32-34.

Prior to his death, Moses spoke to the second generation of the Israelites who would soon enter the Promised Land and among many things, he invited them to remember the days of old-Deut. 32:7-9.

Prior to the nation of Israel being taken captive by the Assyrians, the Lord sent His servant Isaiah inviting the nation to remember the former things of old-Isa. 46:8-10.

Why did the writer of Hebrews admonish the beneficiaries of his letter to recall the former days; not to cast away their confidence and to have need for patient endurance?

It is because of the imminent return of Jesus Christ-Heb. 10:37 For yet a little, a very little while, and He who comes will come and will not delay. (Wuest)