There is a growing surge of books backing a movement toward the abolition of religion, especially Judaism, Christianity and Islam.
It is claimed in one of these books that prayer has been scientifically tested in blind tests and has failed.
I contend that the nature of answered prayer is such that no program of unbiased experimentation can test it. Jehovah is a God who sets His own terms and He must be approached on those terms. He cannot be told how He must respond.
Now without faith it is impossible to please him, for the one who approaches God must believe that he exists and that he rewards those who seek him. Hebrews 11:6 NET Bible
If I had harbored sin in my heart, the Lord would not have listened. Psalm 66:18 NET Bible
Any test of the validity of prayer must actually include bias in the sense of a commitment on the part of the ‘experimenter’ to respond to God if He answers. I know this is unscientific. I sincerely appreciate science. But God has not called us to science and experimentation; He has called us to trust and obey Him.
Taste and see that the LORD is good. Psalm 34:8 NET Bible