In this Q&A episode, we begin with a query from a listener who is agonising over whether to apply for work at a defence research institution. Can believers, even those who hold to just war theory, spend their careers helping create better ways for soldiers to kill? How can we know what God’s will is for our lives in general?

Then we move to a second question about a concerning story: a family using at-home DNA tests accidentally discovered their late father was not biologically related to them, and instead had been swapped for another family’s baby when a newborn in an NHS maternity ward 80 years ago. Should we be wary of taking these kinds of DNA tests, afraid of what unintended consequences may flow? How should Christians approach our society’s increasingly DNA-obsessed thinking about family and kinship?