Luke 9:28-36 - "And it came to pass about an eight days after these sayings, he took Peter and John and James, and went up into a mountain to pray. And as he prayed, the fashion of his countenance was altered, and his raiment [was] white [and] glistering. And, behold, there talked with him two men, which were Moses and Elias: Who appeared in glory, and spake of his decease which he should accomplish at Jerusalem. But Peter and they that were with him were heavy with sleep: and when they were awake, they saw his glory, and the two men that stood with him. And it came to pass, as they departed from him, Peter said unto Jesus, Master, it is good for us to be here: and let us make three tabernacles; one for thee, and one for Moses, and one for Elias: not knowing what he said. While he thus spake, there came a cloud, and overshadowed them: and they feared as they entered into the cloud. And there came a voice out of the cloud, saying, This is my beloved Son: hear him. And when the voice was past, Jesus was found alone. And they kept [it] close, and told no man in those days any of those things which they had seen."
When the angel was sent to the Redeemer's beloved disciple John, we are told that the angel said unto him, "Come up hither." He was to be exalted, to be brought nearer heaven, that his mind might be better prepared for those great manifestations, which an infinitely great and condescending God intended to vouchsafe him. And on reading the verse that you have just now heard, when I also see such a great and serious assembly convened in the presence of God, I think I must address you, as the angel addressed John, and say unto you, "Come up hither;" leave your worldly thoughts, for a time forget the earth. And as it is the Lord's day, a time in which we ought more particularly to think of heaven, I must desire you to pray to God, that ye may get up on Pisgah's mount, and take a view of the promised land. It is true, indeed, eye hath not seen, ear hath not heard, nor hath it entered into the heart of any man to conceive the great and good things, which God hath prepared for his people here; much less, those infinitely greater and more glorious things, that he hath laid up for them that fear him, in the eternal world: but, blessed be God! Though we are not yet in heaven, unless to be in Christ may properly be termed heaven, and then all real Christians are there already; yet, but blessed Jesus has been pleased to leave upon record some account of himself, of what happened to him in the days of his flesh, and of some manifestations he was pleased to grant to a few of his disciples; that from what happened to them here below, we may form some faint, though but a faint idea of that happiness that awaits his people in his kingdom above. If any of you inquire, in what part of our Lord's life those instances are recorded, I have an answer ready: One of these instances, and that a very remarkable one, is recorded in the verses that I have now chosen for the subject of your meditation.