14:46. Indeed, they planned their plot, and their plot was with Allah, though their plot was a great (one, still) it would never be able to remove the mountains (real mountains or the Islamic law) from their places (as it is of no importance) [Tafsir Ibn Kathir, Vol. 2, Page 597]. [It is said by some interpreters regarding this Verse that the Quraish pagans plotted against Prophet Muhammad PBUH to kill him but they failed and were unable to carry out their plot which they plotted].
14:47. So think not that Allah will fail to keep His Promise to His Messengers. Certainly, Allah is All-Mighty, - All-Able of Retribution.
14:48. On the Day when the earth will be changed to another earth and so will be the heavens, and they (all creatures) will appear before Allah, the One, the Irresistible.