Surah Al-Hijr 15:14

وَلَوْ فَتَحْنَا عَلَيْهِم بَابًا مِّنَ ٱلسَّمَآءِ فَظَلُّوا۟ فِيهِ يَعْرُجُونَ

And [even] if We opened to them a gate from the heaven and they continued therein to ascend,

Translation: Saheeh International

Tafsir

And even if We were to open for them a gate from the heaven and they were to continue ascending through it the gate

Excerpt from Tafsir al-Jalalayn, commentary on 15:14, via Quran.com. The reader has the full commentary and 9 more tafsirs.