True repentance brings forgiveness, but it does not always erase the lingering consequences of a person's past actions. When priests born of Aaron's line strayed and burned incense to idols at various high places throughout the land, their eventual return to proper worship came with permanent changes to their holy status. Even after King Josiah purified the land and guided these priests back to God, they were forever disqualified from performing sacrificial duties. They could no longer approach God's altar in Jerusalem to serve Him directly.
Despite this severe restriction, they were not entirely stripped of their priestly rights. Their new standing was considered equal to that of priests with physical blemishes. Because of this, they remained integrated among their fellow priests. They shared in the priestly gifts and were fully permitted to eat from them, even though they were barred from the actual work at the altar.
As part of their ongoing provisions, these priests consumed unleavened bread. The primary approach among commentators is that this refers to the leftover portions of the meal offerings, which were baked without leaven. This detail serves as a broader example representing all the holy foods and meats they were still allowed to consume. Taking a different, more conceptual approach, [אהבת יהונתן] explains that eating unleavened bread served as a specific spiritual remedy. These priests had been deeply immersed in the impurity of idol worship and struggled to break free from its grip. Because leavened bread represents the human tendency toward evil, consuming unleavened bread was established as a deliberate practice to help them distance themselves from the negative influences of their past.