John Chrysostom

(Hom. lxxxiii) Jesus had often met and talked alone with His disciples there, on essential doctrines, such as it was lawful for others to hear. He does this on mountains, and in gardens, to be out of reach of noise and tumult. Judas however went there, because Christ had often passed the night there in the open air. He would have gone to His house, if he had thought he should find Him sleeping there.