Hebrews 11:38 (Amplified Bible)
[Men] of whom the world was not worthy — roaming over the desolate places and the mountains, and [living] in caves and caverns and holes of the earth.
For this reason he had to be made like them, fully human in every way, in order that he might become a merciful and faithful high priest in service to God, and that he might make atonement for the sins of the people.
For if we go on deliberately and willingly sinning after once acquiring the knowledge of the Truth, there is no longer any sacrifice left to atone for [our] sins [no further offering to which to look forward].
–Amplified Bible, Classic Edition (AMPC)