There will be many who claim they were sent by God, but they will be known by their fruits.

There are many who profess to know and to love God, but their actions betray them. “Therefore my brethren, note those who cause division and offenses, contrary to the doctrine you have learned, and avoid them. For those who are such do not serve our Lord Jesus Christ, but their own belly, and by smooth words and flattering speeches deceive the hearts of the simple. Therefore, I want you to be wise in what is good and simple concerning evil, and the God of peace will crush Satan under your feet shortly. The grace of our Lord Jesus Christ be with you. Amen. Romans 16:18-20