Luke 9:36

And when the voice had passed, Jesus was found alone. And they were silent and told no man in those days any thing of what they had seen.

Matthew 17:9

And when they went down from the mountain Jesus charged them, saying, Tell no man the vision till the Son of man is raised from the dead.

Mark 9:6

for he knew not what he answered, for they were afraid.

Mark 9:9-10

And coming down from the mountain he charged them to tell no man what they had seen, till the Son of man should have risen from 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
And when they went down from the mountain Jesus charged them, saying, Tell no man the vision till the Son of man is raised from the dead.
Mark 9:6
for he knew not what he answered, for they were afraid.

General references

Mark 9:8
And looking round immediately they no longer saw any one but Jesus alone with them.