The elegance of the language of the translation possibly gets in the way a tiny bit. It is absolutely accurate but it is so refined that I wonder if we see quite what the apostle says.
If only we could be more like that. Much more concerned in relating to the converts, the people who God draws to himself, who God transfers from the kingdom of darkness into the kingdom of his own dear Son and liberates and makes new. This is the feelings of the apostle and the delight. The language he uses is powerful.