Intentional

Hebrews 9:7 (ESV)
⁷ but into the second only the high priest goes, and he but once a year, and not without taking blood, which he offers for himself and for the unintentional sins of the people.

This verse speaks only of unintentional sins. There is a vast array of sins which fall under the heading of “intentional”. These could not be addressed by the ministry of an earthly high priest. This was left to our heavenly high priest, Who alone is able to cleanse completely with His blood. His life was given for the many. We just have to be intentional to repent and receive the benefit of that blessed gift.