As the disciples watched, the vision began to fade.
The two visiters were ready to leave.
"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" Luke 9:33

Nothing was said to Peter regarding what he had
asked Jesus. But a cloud began to descend upon
them. It was the Shekinah glory. Then a voice
spoke out of the cloud, "This is my beloved Son:
hear him" Luke 9:35

They weren't to seek the glory of the Old Testament
but to look to the greater glory which came in Jesus.