1. They saw no one but Jesus only. (Mt 17:1-8)

Peter, James, and his brother John followed Jesus to a high mountain. And there they saw Jesus transfigured and conversing with Moses and Elijah. So Peter asked Jesus to build three tents for Jesus, Moses, and Elijah. But in the end, everyone disappears and only Jesus remains. (Mt 17:8)

Mt 17:8 And when they had lifted up their eyes, they saw no man, save Jesus only.

All the Old Testament was written to describe Christ. (Jn 5:39)

Jn 5:39 Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.

Moses waited for Christ and wrote the Pentateuch. (Gen 3:15, Deut 18:15, Heb 11:24-26)

Gen 3:15 And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel.

Deut 18:15 The Lord thy God will raise up unto thee a Prophet from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken;

Heb 11:24 By faith Moses, when he was come to years, refused to be called the son of Pharaoh’s daughter;
25 Choosing rather to suffer affliction with the people of God, than to enjoy the pleasures of sin for a season;
26 Esteeming the reproach of Christ greater riches than the treasures in Egypt: for he had respect unto the recompence of the reward.\

Abraham waited for Christ. (Jn 8:56)

Jn 8:56 Your father Abraham rejoiced to see my day: and he saw it, and was glad.

All the prophets also wanted to see Christ. (Mt 13:17)

Mt 13:17 For verily I say unto you, That many prophets and righteous men have desired to see those things which ye see, and have not seen them; and to hear those things which ye hear, and have not heard them.

After all, through the Bible, only Christ remains for us.