'Perfection' in the Bible

From Zion, [the] perfection of beauty, God shines forth.

I have seen a limit to every perfection; your command [is] very broad.

They clap hands over you, all who pass along the way; they hiss and they shake their head, at the daughter of Jerusalem. Is this the city of which it is said, "A perfection of beauty, a joy for all the earth?"

She lusted after the {Assyrians}, governors and prefects, warriors clothed in perfection, {expert horsemen}, all of them {handsome young men}.

And to all these [things] [add] love, which is [the] bond of perfection.

Thus if perfection was through the Levitical priesthood, for on the basis of it the people received the law, what further need [is there] for another priest to arise according to the order of Melchizedek and not said to be according to the order of Aaron?