Bible Verses About Priests: Services of, ineffectual for removing sin

Therefore, if it had been possible to reach the goal through the system of cohanim derived from Levi (since in connection with it, the people were given the Torah), what need would there have been for another, different kind of cohen, the one spoken of as to be compared with Malki-Tzedek and not to be compared with Aharon?

Now every cohen stands every day doing his service, offering over and over the same sacrifices, which can never take away sins.