Read Acts 21. Someone forgot to tell Paul, James, and myriads of the followers of Messiah that the “Temple era” had ended.
The curtain hiding the Holy of Holies was split apart when Jesus died. That was the spiritual ending. The Holy of Holies, where God dwelt, was the purpose of the temple. Paul went there because that is where people still went who were not Christian. The temple was literally obliterated in 70 AD as Jesus predicted. That was its physical ending.
Read Acts 21. Someone forgot to tell Paul, James, and myriads of the followers of Messiah that the “Temple era” had ended.
A generation's grace period, and the Old (Mosaic) Covenant cultic order was pretty thoroughly ended.