Final answer:
The innermost chamber in the biblical Tabernacle and the Temple in Jerusalem where the ark of the covenant was kept is called the Holy of Holies.
Step-by-step explanation:
The innermost chamber in the biblical Tabernacle and the Temple in Jerusalem where the ark of the covenant was kept is called the Holy of Holies. It was a special location kept in total darkness and was considered the most sacred space in the temple. Only the high priest was allowed to enter the Holy of Holies, and he could only do so once a year on the Day of Atonement.