17:4 Let us make three tents - The words of rapturous surprise. He says three, not six: because the apostles desired to be with their Master.

Matthew 17:4 Parallel Commentaries

On the Words of the Gospel, Matt. xvii. 21, "How Oft Shall My Brother Sin against Me," Etc.
1. Yesterday the holy Gospel warned us not to neglect the sins of our brethren: "But if thy brother shall sin against thee, rebuke him between him and thee alone. If he shall hear thee, thou hast gained thy brother. But if he shall refuse to hear thee, take with thee two or three more; that in the mouth of two or three witnesses, every word may be established. And if he shall neglect to hear them too, tell it to the Church. But if he shall neglect to hear the Church, let him be unto thee as an heathen …
Saint Augustine—sermons on selected lessons of the new testament

A Desperate Case --How to Meet It
How great the difference between Moses and Christ! When Moses had been forty days upon the mountain-top, he underwent a kind of transfiguration, so that his face shone with exceeding brightness when he came down among the people, and he was obliged to put a veil over his face; for they could not bear to look upon his glory. Not so our Saviour! He had been really transfigured with a greater glory than Moses could ever know, and yet, as he came down from the mount, whatever radiance shone upon his …
Charles Haddon Spurgeon—Spurgeon's Sermons Volume 10: 1864

Jesus Only
This morning, in trying to dwell upon the simple sight of "Jesus only," we shall hold it up as beyond measure important and delightful, and shall bear our witness that as it was said of Goliath's sword, "there is none like it," so may it be said of fellowship with "Jesus only." We shall first notice what might have happened to the disciples after the transfiguration; we shall then dwell on what did happen; and then, thirdly, we shall speak on what we anxiously desire may happen to those who hear …
Charles Haddon Spurgeon—Spurgeon's Sermons Volume 16: 1870