Earth's stability

وَٱلْأَرْضَ مَدَدْنَـٰهَا وَأَلْقَيْنَا فِيهَا رَوَٰسِىَ وَأَنۢبَتْنَا فِيهَا مِن كُلِّ شَىْءٍ مَّوْزُونٍ

And the earth - We have spread it and cast therein firmly set mountains and caused to grow therein [something] of every well-balanced thing.

وَجَعَلْنَا فِيهَا رَوَٰسِىَ شَـٰمِخَـٰتٍ وَأَسْقَيْنَـٰكُم مَّآءً فُرَاتًا

And We placed therein lofty, firmly set mountains and have given you to drink sweet water.

وَٱلْجِبَالَ أَوْتَادًا

And the mountains as stakes?

وَٱلْجِبَالَ أَرْسَىٰهَا

And the mountains He set firmly