Good question. This goes back to the old saying: “Don’t Question God!”
The key point of this saying is not “Don’t Question”, but the subject “God”.
In order for me to obey, I need to ascertain that the instruction indeed comes from God, not Satan. The only way for me to find out is to leverage on my knowledge that I had acquired about the true teaching to question that person — until I am convinced.
Today, too many devotes would simply follow the instruction blindly, in effect, had actually failed the test that God gave them (remember the teaching of don’t pray to craved image? BTW, a Cross is a craved image, a priest wearing a robe is yet another craved image!).
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