Br. David Steindl-Rast, a Benedictine monk, introduces us to the term “religiousness” in his 2023 book: “You Are Here: Key Words for Life Explorers.” He writes: “That we have to interact with unfathomable, inexhaustible, unstoppable life is the basic fact of our human existence. The human mind is by its very nature bent on diving into mystery, on understanding it, and on guiding our actions based on that understanding.” This, he continues, is “the primal religious feeling” which he calls religiousness. We all have it and we express it through a wide variety of “religions” or belief systems. Religiousness is common to all human beings: religions are the ways we live it out.
I find this further explanation helpful. Compare religiousness “with a huge underground reservoir from which a multitude of wells draw water. At different moments in history, the founder of a religious tradition comes along and digs a new well. The wells may differ widely from each other, according to the personality of the one who built it, the given circumstances of the place and its people, and their needs at this historic moment. We can enjoy the resulting differences between the wells if we remember that from each flows one and the same water.” One reservoir, many wells, same water.
How do you think our religious landscape would change if we accepted this idea? If we valued the things that unite us, ultimately one God of all, one Source filling many wells, instead of defining the uniqueness of each well?
Shining Spirit 
My faith is built upon ‘one source.’
I love this idea. It is what I have always believed.