From Matthew 13:31-32,
31 He [Jesus] put before them another parable: “The kingdom of heaven is like a mustard seed that someone took and sowed in his field; 32 it is the smallest of all the seeds, but when it has grown it is the greatest of shrubs and becomes a tree, so that the birds of the air come and make nests in its branches.”
Is it true that mustard seeds are smaller than all other seeds?