(Al-Vaqia) 56 : 76
وَإِنَّهُ لَقَسَمٌ لَوْ تَعْلَمُونَ عَظِيمٌ
And it is a great swearing, if you are knowing.
In this period when it is understood about the wideness of the universe having many groups of stars in which billions of stars which are many times bigger than the earth are included, it is more understandable about ‘it is a great swearing’ mentioned in the verse. See explanation 3: 190-191; 51: 47; and 53: 1.