Luke 9:36

After this voice had spoken, Jesus was found alone. They kept it to themselves, and said not a word to any one at that time about what they had seen.

Matthew 17:9

As they were descending the mountain, Jesus laid a command upon them. "Tell no one," He said, "of the sight you have seen till the Son of Man has risen from among the dead."

Mark 9:6

For he knew not what to say: they were filled with such awe.

Mark 9:9-10

As they were coming down from the mountain, He very strictly forbad them to tell any one what they had seen "until after the Son of Man has risen from among the dead."

Treasury of Scripture Knowledge

Summary

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.

General references

Bible References

And they

Matthew 17:9
As they were descending the mountain, Jesus laid a command upon them. "Tell no one," He said, "of the sight you have seen till the Son of Man has risen from among the dead."
Mark 9:6
For he knew not what to say: they were filled with such awe.

General references

Mark 9:8
Instantly they looked round, and now they could no longer see any one, but themselves and Jesus.