Answer:
Historical perspective can be accepted but not relied
Step-by-step explanation:
Historical perspective depends on the point of view of the narrator and the "side" of history one belongs to.
Both the accounts of slave and the Egyptian priest could be taken as true yet cannot be believed as completely true. The slave cannot accept the subjugation by the Egyptian rule and the hardships he has to go through. Hence, his account of cruelty may be taken as true.
On the other hand, the priest describes Egyptians as religious and peaceful which is justified from his perspective and the role he plays within the rule.
However, it is important to note that the historical perspective must be proven with facts, documented writing and other sources of information. It cannot be completely relied.