'Heathenism' in the Bible

then you shall bring her [home] to your house, and she shall shave her head and trim her nails [in preparation for mourning].

This is what the Lord says,“In a favorable time I have answered You,And in a day of salvation I have helped You;And I will keep watch over You and give You for a covenant of the people,To restore the land [from its present state of ruin] and to apportion and give as inheritances the deserted hereditary lands,