This is going to get a little religious. For those who are uncomfortable with the word God, please substitute Love. God is love. I'm not pushing religion, just using expedient language. Thanks for understanding.
Our souls are interconnected. Even the most religious person has to acknowledge that the bible says God is found within our hearts, and when we gather, we are stronger, love is fed, possibilities are multiplied. We learn all this, and we surround ourselves with people who are like us. That's not where the greatest strength lies. The power to heal humanity is in reaching past those we know and touching someone different.
Christianity, being born out of Judaism, has a tendency to want to stay the same, to avoid assimilation, to find support within a defined community. As many times as Jesus talked about other cultures, marginalized groups like invalids, prostitutes, the poor, the different, we are very good at insulating ourselves against those very people.
But healing comes from growth. Just like our bodies regrowing tissue to heal a wound, leaving a scar but becoming functional again, we need to grow, stretch, move, in order to heal our souls. We need to reach beyond our comfort zones and connect with strangers, make them friends, and contribute to global healing, the healing of mankind. "Thy kingdom come, thy will be done, on earth as it is in heaven," a prayer taught to toddlers and repeated throughout life, means to treat life on earth as God wants it treated.
"The 'problem' of immigrants, welfare recipients, incarcerated, mentally ill, .... disabled, and all who are marginalized by mainstream society, is a problem of the incarnation. When we reject our relatedness to the poor, the weak, the simple, and the unlovable we define the family of creation over and against God. In place of God we decide who is worthy of our attention and who can be rejected." —Ilia Delio, as quoted by Richard Rohr in his excellent essay linked below.
By playing God, by wallowing in our own power, by picking and choosing bits of religion as if it were an a la carte menu, we deny ourselves the greatest source of healing, joy, growth, and wisdom. Believe in God or don't, that's between you and God. But at least acknowledge that we are one species, one race, one culture. Our differences are so small compared to our relatedness..
Further reading: https://cac.org/gods-most-distressing-disguise-2016-03-23/