'Perfection' in the Bible

From Zion, the perfection of beauty, God has shined forth.

Everyone who passes by on the road shake their fists at you. They hiss and shake their heads at cherished Jerusalem: "Is this the city men used to call "The Perfection of Beauty,' and "The Joy of the Entire Earth'"?

Now if perfection could have been attained through the Levitical priesthood for on this basis the people received the Law what further need would there be to speak of appointing another kind of priest according to the order of Melchizedek, not one according to the order of Aaron?