Why would a Roman Catholic say that a creed is like a mustard seed?

A Roman Catholic might say that a creed is like a Mustard Seed because, like the small seed that grows into a large tree, a simple statement of faith can lead to profound spiritual growth and understanding. The creed encapsulates essential beliefs that, when embraced, can nurture a deeper relationship with God and foster a vibrant faith community. Additionally, just as mustard seeds have the potential to produce a bountiful harvest, the truths contained in the creed can inspire transformative experiences in believers' lives.