You see the mountains, you think they are solid, while they are passing by like the clouds. The making of God who perfected everything. He is Ever-aware of what you do.
Translation endnotes
[27:88] Interspersed among the verses about the hereafter, the verses 86 and 88 remind us of examples of God's power that we witness. During the revelation of the Quran, not many people considered the earth a moving object; perhaps none knew about the tectonic movement of mountains. Early commentators of the Quran also could not comprehend this fact. So, they struggled to make sense out of this bizarre claim in their holy book. They claimed that the verse was referring to the end of the world. However, they ignored that the verses describing the last Hour depicted chaos and destruction. The end of the world is a calamity of cosmic proportions, which creates an utmost shock and panic among those who will experience it (See chapter 81 and 101 of the Quran). Thus, the unnoticed event described in 27:88 cannot be about the chaos created by the destruction of the universe. Indeed, the end of the verse 27:88 leaves no room for such confusion: "the making of God who perfected everything." The end of the world is neither the perfection of art, nor an imperceptible event. The early audience of the Quran, unable even to imagine the motion of the mountains and earth, tried hard to reconcile it with the verses describing the destruction, chaos and panic of the end times. See 21:33; 36:40; 39:5; 68:1; 79:30. Since the Bible has been tampered by clergymen (See Quran 2:59), it contains numerous false information about nature and scientific issues. Christendom, up to the 17th century, firmly believed that the earth was a firm center of the universe. The Church persecuted many scientists, including Galileo, for asserting that the earth rotates around the sun. See Psalms 93:1; 96:10; 104:5; 1 Chronicles 16:30.