The Holy Spirit was showing by this that the way into the Most Holy Place had not yet been disclosed as long as the first tabernacle was still functioning. (NIV)
By this the Holy Spirit points out that the way into the [true Holy of] Holies is not yet thrown open as long as the former [the outer portion of the] tabernacle remains a recognized institution and is still standing (AMP)
The Holy Ghost this signifying, that the way into the holiest of all was not yet made manifest, while as the first tabernacle was yet standing: (KJV)