How does this passage relate to us. I can see a couple a couple of ways. But I want to share just one.
Paul speaks of how Christ brought peace and united the people (Jews and Gentiles) by creating a new group of people.
Sometimes as mothers we are peacemakers. Especially if we have more than one child. No matter how close your children are, at some point they will have an argument or disagreement.
If they are young children or toddlers they will still be learning to share and and play with others.
During the those often testing times it is our job as mothers to bring peace, discipline if necessary and then afterwards we new to remember to bring them back together. Unite the people. Lol!
I have some strong personalities in my house. So it can be difficult. But not more difficult than Jesus Christ reconciling the Jews and Gentiles. Ask Jesus for help as to how to approach each situation. Remember to use gentleness and kindness. Jesus is our example. Use him as a parent how to. He is personal and he does care.