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

If indeed, then, perfection were through the Levitical priesthood--for the people under it had received law--what further need, according to the order of Melchisedek, for another priest to arise, and not to be called according to the order of Aaron?

and every priest, indeed, hath stood daily serving, and the same sacrifices many times offering, that are never able to take away sins.