Another parable
The parable of the Mustard Seed prefigures the rapid but unsubstantial growth of the mystery form of the kingdom from an insignificant beginning (Acts 1:15); (Acts 2:41); (1 Corinthians 1:26) to a great place in the earth. The figure of the fowls finding shelter in the branches is drawn from (Daniel 4:20-22). How insecure was such a refuge the context in Daniel shows.
kingdom
( See Scofield) - (Matthew 3:2).