Mark 11:24-25

24So I tell you this. When you pray to ask God for anything, believe in him. Believe that you have received that thing. Then you will have whatever you have asked for.

25But when you stand up to pray, first you must forgive other people. If anyone has done something bad against you, forgive that person. If you do forgive them, your Father in heaven will forgive you. God will forgive you for the bad things that you have done.’