give them an example about worldly life. it is like the vegetation of the earth that thrives when watered by the rain which we send down from the sky and then it all becomes stubble which the wind blows away. god has power over all things.
واضرب لهم مثل الحياة الدنيا كماء أنزلناه من السماء فاختلط به نبات الأرض فأصبح هشيما تذروه الرياح وكان الله على كل شيء مقتدرا