وَقالَ لَهُم نَبِيُّهُم إِنَّ آيَةَ مُلكِهِ أَن يَأتِيَكُمُ التّابوتُ فيهِ سَكينَةٌ مِن رَبِّكُم وَبَقِيَّةٌ مِمّا تَرَكَ آلُ موسىٰ وَآلُ هارونَ تَحمِلُهُ المَلائِكَةُ ۚ إِنَّ في ذٰلِكَ لَآيَةً لَكُم إِن كُنتُم مُؤمِنينَ

Their prophet further told them, “The sign of his kingship is the restoration of the Ark to you, containing reassurance from your Lord, and legacy of the family of Moses and the family of Aaron, carried by the angels. In this lies a sign for you, if you are believers.”