Jesus uses normal things of life as Spiritual examples.
Dinner party of important people on the sabbath. Jesus previously had healed on the Sabbath. So He was watched carefully. Jesus challenges the Pharisees before healing. Answer: silence. Another questions about an ox.
1. God's heart is to care for those who are afflicted. We tend to like rules and laws rather than grace. There is no limit to the fruits of the Spirit (eg patience).
2. A lesson in humility. Where are we placed at the wedding reception? We will be humiliated. The advice of Jesus. Do we seek honour here and now? If so, our reward will be now and eventually we will humbled. God will reward the humble later.
3. Generosity. Don't invite friends and family, but the poor and needy. Invite those who can't repay you. We often think of repayment. This is what God did for us.