[HarleyD]

Crawling on knees does not equal idolatry. Crawling on knees does not equal idolatry. Crawling on your knees to a statue four blocks away is another story.

You cannot know if it is idolatry or an physical expression of piety

Of course you can. If it's not idolatry then it's sinful to express such physical piety. It's nothing more than what the Pharisees did. Either way their guilty.

If this ISN'T idolatry then please offer a definition of what you feel would be idolatry.