He uses the passive continuous tense: “which is being renewed.” Paul is not intent here on encouraging passivity, which leaves the work of transformation wholly up to God and treats the believer as if he or she were an anaesthetized body, undergoing an operation by a divine surgeon. There are plenty of active commands in the context to prevent us from falling into that error (although we may want to debate exactly how the divine and human interact). His point is rather that the renewal of the mind,