Whenever someone says, “I belong to the Catholic Church,” and another,
“I belong to the Lutheran Church,” are you not thinking as non-spiritual humans?

What is the Catholic Church, after all, and what is the Lutheran Church?
At most, they are ministers through whom you became believers,
just as the Lord assigned each one.
Churches may plant, denominations may water, but God causes the growth.
Therefore, neither the one who plants nor the one who waters is anything,
but only God, who causes the growth.
Churches that plant and denominations that water are one,
and each will receive wages in proportion to their labor.
For they may be God’s co-workers;
but we are God’s field, God’s building.