﴿ وَكَذَٰلِكَ نُرِىٓ إِبْرَٰهِيمَ مَلَكُوتَ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ وَلِيَكُونَ مِنَ ٱلْمُوقِنِينَ ﴾

“And thus We gave Abraham [his first] insight into [God's] mighty dominion over the heavens and the earth - and [this] to the end that he might become one of those who are inwardly sure.”

Please check ayah 6:79 for complete tafsir.