Mark 9:12

As they were coming down from the mountain, he commanded them that they should tell no one what things they had seen, until after the Son of Man had risen from the dead.

They kept this saying to themselves, questioning what the “rising from the dead” meant.

They asked him, saying, “Why do the scribes say that Elijah must come first?”

But I tell you that Elijah has come, and they have also done to him whatever they wanted to, even as it is written about him.”

Coming to the disciples, he saw a great multitude around them, and scribes questioning them.

Immediately all the multitude, when they saw him, were greatly amazed, and running to him, greeted him.