[pinkpanther]

No, Isaiah 42 didn't say they were singing at the top of the mountain. 

Isaiah 42 says the people of Sela were singing with joy at the arrival of the Prophet صلي الله عليه وسلم.

You don't remember I told you all that not too long ago?

When did Muhammad take the cable car to mọunt Sela?

Isaiah 42:11 in the King James Version reads: "Let the wilderness and the cities thereof lift up their voice, let the villages that Kedar inhabits; let the inhabitants of Sela sing, let them shout from the top of the mountains.