Note: I disagree with Moody's classification of a crucifix as 'sacred,' rather it is idolatrous; however, perhaps he meant that it was "sacred" to some idolaters, which I would agree with. Also, note what Moody said:
I sometimes think that it is wrong to have pictures of Him at all. (Moody)Perhaps this implies that Moody thought that, in some cases, pictures of Him are alright. I would, of course, disagree with Moody if that is what he is suggesting -- it is wrong to have pictures of Him.