God’s newly reconstituted Israel occurs in and around Jesus to include both Jew and Gentile, not by ethnic association but by faith and water (baptism) and blood (atonement and Eucharist).
Jesus’ miracle in this sermon, then, is a type of the compassion He has for your hearers. While they certainly have many physical needs, your hearers also (more fundamentally) need Jesus’ mercy and forgiveness.
This food, already purchased and freely given in our pericope, is a foretaste of the feast to come as well; the marriage feast of the Lamb in His Kingdom which has no end.
To dwell with a Holy God in their camp, Israel lead holy lives. Anything standing in the way of and threatening this holy relationship must be avoided or eliminated.
These parables invite us to consider the mysterious way of the reign of God. The Kingdom of God comes by grace to those who are seeking and not seeking it.