Matthew 13:31-38

He gave them another parable [to consider], saying, “The kingdom of heaven is like a mustard seed, which a man took and sowed in his field; [Mark 4:30-32; Luke 13:18, 19] and of all the seeds [planted in the region] it is the smallest, but when it has grown it is the largest of the garden herbs and becomes a tree, so that THE BIRDS OF THE AIR FIND SHELTER IN ITS BRANCHES.” [Ezek 17:23] He told them another parable, “The kingdom of heaven is like leaven, which a woman took and worked into three measures of flour until all of it was leavened.” [Gen 18:6; Luke 13:21] All these things Jesus said to the crowds in parables, and He said nothing to them without [using] a parable. This was to fulfill what was spoken by the prophet: “I WILL OPEN MY MOUTH IN PARABLES; I WILL UTTER THINGS [unknown and unattainable] THAT HAVE BEEN HIDDEN [from mankind] SINCE THE FOUNDATION OF THE WORLD.” [Ps 78:2] Then He left the crowds and went into the house. And His disciples came to Him saying, “Explain [clearly] to us the parable of the weeds in the field.” He answered, “The one who sows the good seed is the Son of Man, and the field is the world; and [as for]the good seed, these are the sons of the kingdom; and the weeds are the sons of the evil one