Jamieson, Fausset and Brown on Mark 6:46

46. And when he had sent them away, he departed into a mountain to pray--thus at length getting that privacy and rest which He had vainly sought during the earlier part of the day; opportunity also to pour out His soul in connection with the extraordinary excitement in His favor that evening--which appears to have marked the zenith of His reputation, for it began to decline the very next day; and a place whence He might watch the disciples on the lake, pray for them in their extremity, and observe the right time for coming to them, in a new manifestation of His glory, on the sea.