Mark 4:30-34 HCSB
And He said: “How can we illustrate the kingdom of God, or what parable can we use to describe it? It’s like a mustard seed that, when sown in the soil, is smaller than all the seeds on the ground. And when sown, it comes up and grows taller than all the vegetables, and produces large branches, so that the birds of the sky can nest in its shade.”
He would speak the word to them with many parables like these, as they were able to understand. And He did not speak to them without a parable. Privately, however, He would explain everything to His own disciples.
HCSB: Holman Christian Standard Bible