From the temple; Revised Version, went out froth the temple, and was going on his way ( ἐπορευ ìετο). So the best manuscripts and versions. It was while he was proceeding on the route to Bethany that the disciples interrupted him with their remarks about the temple.
He had now taken his final leave of the hallowed courts; the prophecy of the desolation of the house was beginning to be fulfilled (see on Matthew 23:38). His disciples came to him. They were disquieted by Christ's words recorded at the end of the last chapter, which spoke of a terrible retribution about to fall, of the desolation of the temple, of Christ's own departure for a time.
St. Mark (Mark 13:3) tells us that Peter, James, John, and Andrew asked him privately when these things should be, and what signs should forewarn of their approach, as in verse 3. St. Matthew records here that his disciples came to him for to show ( ἐπιδεῖξαι, to display) him the buildings of the temple ( ἱεροῦ, the whole sacred enclosure).
They had gathered from his words that destruction awaited this edifice, but as they gazed upon it they could scarcely bring themselves to believe in its coming overthrow. So as they gained some commanding point of view, they drew Christ's attention to its beauty, magnificence, and unequalled solidity, desiring him to explain further the mode and time of the catastrophe.
It was popularly said, "He who never saw the temple of Herod has never seen a fine building."