That's awesome that means you have the ultimate truth in your corner. So I would encourage you to build off that. Start praying with them. Do it on an equal ground though.
Example:Heavenly Father show humble us and show us what is true. Cast out all the lie we might believe and allow only your light and truth to come forth
Right now they think they are standing in Truth and that makes it very difficult to change hearts. So it's best to remain humble yourself(standing as if you don't know it all either). This allows a place in which you can BOTH approach the Lord together and have him change hearts.
That's awesome that means you have the ultimate truth in your corner. So I would encourage you to build off that. Start praying with them. Do it on an equal ground though.
Example:Heavenly Father show humble us and show us what is true. Cast out all the lie we might believe and allow only your light and truth to come forth
Right now they think they are standing in Truth and that makes it very difficult to change hearts. So it's best to remain humble yourself(standing as if you don't know it all either). This allows a place in which you can BOTH approach the Lord together and have him change hearts.