Certainty of Faith (Yaqin)

رَبِّ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ وَمَا بَيْنَهُمَآ ۖ إِن كُنتُم مُّوقِنِينَ

Lord of the heavens and the earth and that between them, if you would be certain.

وَفِى خَلْقِكُمْ وَمَا يَبُثُّ مِن دَآبَّةٍ ءَايَـٰتٌ لِّقَوْمٍ يُوقِنُونَ

And in the creation of yourselves and what He disperses of moving creatures are signs for people who are certain [in faith].

وَفِى ٱلْأَرْضِ ءَايَـٰتٌ لِّلْمُوقِنِينَ

And on the earth are signs for the certain [in faith]

أَمْ خَلَقُوا۟ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضَ ۚ بَل لَّا يُوقِنُونَ

Or did they create the heavens and the earth? Rather, they are not certain.