The thing about Korah is that after the ground opened up and swallowed him and the other rebels, the people blamed Moses and Aaron!
Moses was chosen by the Lord and had many witnesses of his power, according to the story. Also, seventy of the elders of Israel were permitted to see God and dine in his presence. Even to this day, the peaks of Sinai (Jebal Al Lawz) are blackened by fire.
The Governing Body has not seen God, nor have they seen an angel or angels, nor have they been commanded to do anything. They have appointed themselves as leaders in a manmade religion.