How many men of the scriptures could speak and the mountains obey them?
Very few, but the interesting thing is that the answer is not “zero”. Both the Brother of Jared and Enoch spoke and the mountains obeyed them.
Were they simply chosen by God to do such things?
No, they were not selected by God to have power. They choose to follow God better than we do, and thus they had greater power than we do.
What is the difference between one of us and Enoch? A vast quantity of righteousness. And if not for that, you or I could enjoy his same blessings.