Does God listen to crowds more readily than to a few? What I mean is, are the prayers of, say, five thousand believers five times as effective as the prayers of one thousand?
I am inclined to say probably not. Jesus said, "If two of you on earth agree about anything you ask, it will be done for you by my Father in heaven" (Matt. 18:19). Paul seems to have been as confident of the effectiveness of Philemon's prayer as of groups of believers. Nevertheless, he believed that God heard the prayers of groups of believers, and he requested them. See Romans 15:30; 2 Corinthians 1:11; Philippians 1:19; Philemon 22. Fellowship in prayer (groups praying together) probably does much good for those who pray, even if the prayers of one prayer warrior are as effective.