6, 7. (a) What shows that Jehovah is keenly interested in having all his worshipers advance to spiritual maturity?
٦ ،‏ ٧ (‏ أ )‏ ماذا يُظهِر ان يهوه مهتم كثيرا بأن يتقدم كلّ عبّاده الى النضج الروحي ؟‏