Mark 9:8-10

Revised Standard Version Catholic Edition

⁸ And suddenly looking around they no longer saw any one with them but Jesus only.

The Coming of Elijah

⁹ And as they were coming down the mountain, he charged them to tell no one what they had seen, until the Son of man should have risen from the dead. ¹⁰ So they kept the matter to themselves, questioning what the rising from the dead meant.