Kingdom of the least

31 It is like a grain of mustard seed, which, when it is sown in the earth, is less than all the seeds that be in the earth:

In what ways is the kingdom of God the least of all the seeds that ve in the earth?

Small as a grain of mustard seed was a proverbial expression among the Jews for something exceedingly minute. The mustard-seed is  the least which the husbandman was accustomed to sow,and the tree when full grown was larger than the other herbs in his garden.