Matthew 18:17-20

17If he doesn’t pay attention to them, tell the church. If he doesn’t pay attention even to the church, let him be like a Gentile and a tax collector to you.

18Truly I tell you, whatever you bind on earth will have been bound in heaven, and whatever you loose on earth will have been loosed in heaven.

19Again, truly I tell you, if two of you on earth agree about any matter that you pray for, it will be done for you by my Father in heaven.

20For where two or three are gathered together in my name, I am there among them.”