Regarding the Joyce Myer we should always rebuke our brothers and sister in love. However as saints we should really ask the father for Him to lead us into all truth. Just because someone is making someone feel good about themselves is not helping them. If you really ask the father to reveal truth to you I promise you will be blown away. Most televangelist are satanists . Yes thats correct satanists . Sheep in wolves clothing. Now you would never guess how deceptive the enemy is. I have talked to well meaning and loving christians who are under this delusion of who is who. You will know them by their fruits. Allot and most christians who are watching for the rapture and they are going to be stunned they will be left behind to go through the tribulation because of being misled by the wolves. Its not uncommon for immature believers to go on the attack with out love and that is in error because as you would think he or she were a devil but in fact were correct but the message was too harsh and unwise. Joyce Myer flys around in a private jet costing millions of dollars because she actually believes because she is helping people and thats her just reward. She said its too uncomfortable to travel as she does to travel like other people. Thats just one flag and research other statements she has made. All i can say is diligently ask the Lord to show and lead you into all truth and prepare for some answers that will just turn your world upside down. I challenge you to do this using this very person no matter how convinced you are that she is genuine and of the Lord.    
Best Regards,
David K Anderson