memes

The concept of changing the Bible gets a little weird because we are almost universally discussing a translation of the "original" text, with the original as we commonly think of it being a Greek translation that was commonly in use in the years preceding and including the life of the historical Jesus. It gets more complex than that, but it's a good start.

I am using the historical Jesus as a reference point because there are things that scholars, theistic and non-theistic alike, almost universally agree to as being historical as opposed to matters of faith.

Jews, Catholics, and Protestants number the commandments differently though all contain effectively the same content and total up to 10. The Catholic numbering predates the Protestant numbering by centuries. I do not know the timeline of the Jewish numbering. One could easily assume it predates the Catholic numbering, but many Jewish customs date to later eras (often medieval Rabbinical Judaism). I have not looked up the Jewish tradition recently. Regardless, the Catholic numbering predates the Protestant numbering.

Idols are an interesting thing, especially taken in the context of the belief of ancient Semitic peoples. The short version being that it takes much more than just the existence of a statue or an image to be an idol. There are cultural nuances from the time, but at the very least it requires worship of the image as on par with God. The comment you cite even includes the concept that worshipping these images is what makes them bad. The images in Catholic churches are not treated that way.