‘I used to preach heresy’ Chris Hawthorne, future Principal of the Proclamation Institute Zambia (PIZ), on strengthening Bible teaching PIZ students at their graduation ceremony I recently caught up with Humphrey, a Zambian in his 50s. subscribe now Join today to gain access to the rest of this article and many others. more info login If you are already a subscriber, log in to continue. log in access code If you have an access code, enter it here: Go free trial Get free access for 14 days: Sign up Click here to find out how we take care of your personal data.