'Polished' in the Bible

Which sends ambassadors by the sea,Even in vessels of papyrus on the surface of the waters.Go, swift messengers, to a nation [of people] tall and smooth (clean shaven),To a people feared far and wide,A powerful and oppressive nationWhose land the rivers divide.

At that time a gift of homage will be brought to the Lord of hostsFrom a people tall and smooth (clean shaven),From a people feared far and wide,A powerful and oppressive nation,Whose land the rivers divide—To the place [of worship] of the name of the Lord of hosts, to Mount Zion [in Jerusalem].

And he hath made my mouth like a sharp sword; in the shadow of his hand hath he hid me, and made me a polished shaft; in his quiver hath he hid me;