They might read the Bible for 15 minutes or work on a personal study project. As another possibility, what about making a slight adjustment in your weekly schedule?
ते १५ मिनिटे बायबल वाचतात किंवा हाती घेतलेल्या एखाद्या वैयक्‍तिक अभ्यासाच्या प्रकल्पावर काम करतात.