When the angels said “Glory to God in the highest”, I wonder what they were seeing that we on earth were not seeing. Maybe this is what is said in the presence of God who is visible. The angels see God in the heavenly realms and it is the response of their…spirits?…to break out in proclamation and praise. When the shepherds leave their fields for the manger, they return and also praise and glorify God for all they’d seen and heard.