Charles Ellicott Commentary Isaiah 62:5

"For as a young man marrieth a virgin, so shall thy sons marry thee; and as the bridegroom rejoiceth over the bride, so shall thy God rejoice over thee." — Isaiah 62:5 (ASV)

So shall thy sons marry thee ... —The image of the bride is presented under another aspect. The people of a country are, in their collective unity, as the bridegroom, and the country is as the bride. They are bound, as the husband is to the wife, to cherish and protect it, to be ready to live and die for it.