I am hoping to find the common denominator......since shrines and objects of worship are found in so many of the world's religions and are accepted without question.....if there is one God who is the Creator of all, then somewhere back in the past, the seed of this idea germinated in man.....but it grew in so many gardens after that, including "Christianity" (or more correctly Catholicism).....so what is that suggesting to you?
Well, I'll assume god exists for the sake of the question. Since there is only one creator and many religions have a creator, I couldn't define it as a creator from the christian religion. Noneless any other religion. So, I'll say the creator is such because he's the source of the world but not define him in any christian way (none less call it a he).
So, it's easier to see the connection if you don't compare it to the creator of the bible as the soul definition of what you're trying to understand.
Take away the bible and other scriptural books since that's not universal. If the creator is the, well, creator of everything and everyone, our religions would be just describing the creator through our own traditions, actions, our sharing the word, our using beads in prayer, and so forth. They are just individual man's ways to connect with the divine. The only dictations and "rules" of what's idolatry and what is not is based on individual religion's criteria. It's not a headfast rule for all religions to abide by.
What constitutes a shrine......?
Think of the most basic shrine is that of abraham's altar. He could have attempted to sacrifice Isaac anywhere. However, he was told to create an altar and thereby (like the Levites and their carrying the sacrifice-I believe-in the tent. If I remember correctly, those who went in without permission turned to dust or was killed somehow). Abraham "entered" a sacred space in front of the shrine to do what his god told him to do.
Whether that space then was out in the wilderness or in a building, it's not the gold, building, and cement that makes the space and altar a meditative setting but the space "in front of god" in which people come for "their choice" to pray and commune with like believers or with their god(s) in other faiths. Shrines, temples, etc are the "spaces" in which one creates to pray. The actual tools and things in the shrine help with or supplement their prayers but not all religions see them as the prayer itself.
And why are images such a common part of worship outside of Judaism, Islam and original Christianity (as opposed to the adoption of later Catholic statuary) but found throughout the world in non-Abrahamic religions?
I think it's because we are all human and find ways to connect to the divine(s) in however we choose to or are taught to and how to see it. I don't see christianity, judaism, islam any different from paganism, hinduism, etc when it comes to ritual, traditions, and intentions of worship.
Christianity shouldn't be the common denominator or criteria to understand other religion's intentions, traditions, and tools used in worship. I think that's what's throwing you off.
Why did Israel succumb to idolatry? And why did Catholicism do the same when they both had God's word to warn them not to do that?
I'm not sure about Isreal. They "probably" couldn't understand worshiping a god that couldn't relate to in the physical world. I'm not sure where the "spirit" of god came from that has all of the sudden been striped from anything and anyone existing in the physical universe.
To me, the more abstract people make god, the more new age it becomes. While that's not bad in itself, the world progresses, I'm not sure many christians see it. It's almost as you guys JW, Catholics, whoever, have so many interpretations of god that to make it one object would cause wars (which they did).
Why does god need to be mystic, a force, energy, breathe, or so have you in order for it to be the right god?
As for catholicism, I'm not sure. I went to a somewhat liberal church where there wasn't emphasis, if any, on anything else but the Eucharist, Christ passion, and physical communion. No focus on Mary and the Saints or anything like that. So, I was able to see "the point" without being blinded by the gold and statues as if They were the point not christ himself.