But when He was by himself, those around Him together with the twelve asked Him about the parable.

And apart from a parable He did not speak to them, however, privately to His disciples, he would explain all things.

And the disciples approached and said to Him, "Why do You speak to them in parables?"

Then having dismissed the crowds, Jesus went into the house. And His disciples came to Him, saying, "Explain to us the parable of the tares of the field."

Then Peter answered and said to Him, "Explain to us this parable."

Then the disciples came to Jesus privately and said, "Why could we not cast it out?"

So Jesus said to them, "Because of your unbelief; for assuredly I say to you, if you have faith like a mustard seed, you shall say to this mountain, 'Be moved from here to there,' and it shall move; and nothing shall be impossible for you.