Yes, they need a conviction that is so strong that it moves them to dedicate themselves to Jehovah and to serve him wholeheartedly.
ایمان قوی ،‏ فرزندتان را بر آن می‌دارد که خود را به یَهُوَه وقف کرده و با تمام وجود به او خدمت کند .‏