The readings for Sunday (all of them) are meant to be read and understood together (especially the Old Testament and the Gospel). Likewise, the Sunday readings for all of Ordinary Time are meant to be understood together. Which means that to understand these readings, we need to think about both parables and miracles.
With this continuity, the readings tell us a lot about the kingdom of heaven. Not only is it valuable and joyful, it is needed - and (amazingly) we are invited in, without price.
To all of this, Sunday's readings make it clear that all of this is more than words. It is real and (as the Gospel shows us) it is more than enough.
Readings for the 18th Sunday in Ordinary Time: http://www.usccb.org/bible/readings/080314.cfm