Mark 4:30-32
[30]And He said, With what can we compare the kingdom of God, or what parable shall we use to illustrate and explain it?
[31]It is like a grain of mustard seed, which, when sown upon the ground, is the smallest of all seeds upon the earth;
[32]Yet after it is sown, it grows up and becomes the greatest of all garden herbs and puts out large branches, so that the birds of the air are able to make nests and dwell in its shade.