In this video about the unity of the Eucharist, Jeff Cavins explains the themes in the Mass readings for the 17th Sunday in Ordinary Time, Year B.
In the first reading, Elisha multiplies food for a crowd. In the gospel, Jesus feeds the 5000. Jesus takes what is available and uses it for more than it was intended. Jesus multiplies what we have to offer. And these readings clearly relate to the Eucharist.
The Eucharist unites us. Even we are not physically together, we are united with the entire Body of Christ all over the world. But in the second reading, St. Paul tells us that we must not damage that unity by damaging our relationships with each other. We must be humble, patient, and gentle with each other.
We must work to maintain the unity of the Spirit which we experience in the Eucharist.