'Themselves' in the Bible

wherever there is a man of blameless life, true to his one wife, having children who are themselves believers and are free from every reproach of profligacy or of stubborn self-will.

This is a faithful saying, and on these various points I would have you insist strenuously, in order that those who have their faith fixed on God may be careful to set an example of good actions. For these are not only good in themselves, but are also useful to mankind.