Mark 13:3

And as he sat upon the Mount of Olives ,.... On the east of Jerusalem:

over against the temple : where he could have a full view of it; the eastern wall of the temple being lower than the rest; See Gill on Matthew 24:3 .

Peter, and John, and James, and Andrew, asked him privately ; apart from the rest of the disciples, they being, especially the first three, his favourites, and very familiar with him.