Parables of Mustard Seed and Leaven

18: So He was saying, " What is the
       kingdom of God like, and to what shall
       I compare it?
19: "It is like a mustard seed, which a man
       took and threw into his own garden; and
       it grew and became a tree, and THE
       BIRDS OF THE AIR NESTED IN ITS BRANCHES."
20: And again He said, " To what shall
       I compare the kingdom of God?
21: " It is like leaven, which a woman
       took and hid in three pecks of flour
       until it was all leavened."