It is 'a thing devoutly to be wished'. [=a thing worth wishing for; a thing you want very much to happen]
His parents are 'devout' [='staunch'] believers in the value of a good education.
It is his 'devout' wish to help people in need.
(..) I tend to both the highest born and the lowliest amongst us. Even prostitutes may earn the mercy of the Mother. So you were administering to the needs of these devout prostitutes? A man's private affairs ought to stay private. What do you want from us, High Septon? Justice! (..)2015 TvShow: Game of Thrones Title: High Sparrow Season: 5 Episode 3