Mark 4:34

and without a parable spake he not unto them: but privately to his own disciples he expounded all things.

John 16:25

These things have I spoken unto you in dark sayings: the hour cometh, when I shall no more speak unto you in dark sayings, but shall tell you plainly of the Father.

Matthew 13:36-43

Then he left the multitudes, and went into the house: and his disciples came unto him, saying, Explain unto us the parable of the tares of the field.

Matthew 15:15-20

And Peter answered and said unto him, Declare unto us the parable.

Mark 4:10

And when he was alone, they that were about him with the twelve asked of him the parables.

Luke 24:27

And beginning from Moses and from all the prophets, he interpreted to them in all the scriptures the things concerning himself.

Mark 7:17-23

And when he was entered into the house from the multitude, his disciples asked of him the parable.

Luke 8:9-10

And his disciples asked him what this parable might be.

Luke 24:44-46

And he said unto them, These are my words which I spake unto you, while I was yet with you, that all things must needs be fulfilled, which are written in the law of Moses, and the prophets, and the psalms, concerning me.

Treasury of Scripture Knowledge

Summary

But without a parable spake he not unto them: and when they were alone, he expounded all things to his disciples.

Bible References

When

Mark 4:10
And when he was alone, they that were about him with the twelve asked of him the parables.
Mark 7:17
And when he was entered into the house from the multitude, his disciples asked of him the parable.
Matthew 13:36
Then he left the multitudes, and went into the house: and his disciples came unto him, saying, Explain unto us the parable of the tares of the field.
Matthew 15:15
And Peter answered and said unto him, Declare unto us the parable.
Luke 8:9
And his disciples asked him what this parable might be.
Luke 24:27
And beginning from Moses and from all the prophets, he interpreted to them in all the scriptures the things concerning himself.

General references

Ezekiel 17:2
Son of man, put forth a riddle, and speak a parable unto the house of Israel;
Matthew 13:34
All these things spake Jesus in parables unto the multitudes; and without a parable spake he nothing unto them:
Matthew 22:1
And Jesus answered and spake again in parables unto them, saying,
Mark 4:10
And when he was alone, they that were about him with the twelve asked of him the parables.
Mark 7:17
And when he was entered into the house from the multitude, his disciples asked of him the parable.

American Standard Version Public Domain