Translation of the verse 46 from Surah Ibrahim : Number of verses 52 - - page 261 - Part 13.
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 SAW to kill him but they failed and were unable to carry out their plot which they plotted].
And they had planned their plan, but with Allah is [recorded] their plan, even if their plan had been [sufficient] to do away with the mountains.
(14:46) They had tried all their cunning devices to outwit Us but Allah had the remedy to counteract their devices, even though these were so powerful as to move mountains. " *55
*55) That is, "You have seen that the former people who violated the Divine Law, and who opposed the Message, devised very effective and cunning schemes to avert the consequences of their iniquity, but AIIah defeated them with His single counter-device. You did not give up your crafty schemes against the Message of Truth in the vain hope that your "strong" measures would succeed where the schemes of your predecessors had failed.