Lord, such a decision can only be made by him, and outside pressure may only annoy rather than convince him, so please encourage him to understanding he is damaging the gift of life and health, and setting himself up for later illnesses. I have an uncle dying, 24/7 attached to an oxygen bottle. Not worth the risk. Please help this loved brother to resolve whatever issues lead him to smoke, and help him to make his decision and definitive efforts to stop polluting his lungs.
We move aside from camp-fire smoke! Why then deliberately draw smoke into our lungs?