I must say, that is profound. Your analysis is absolutely correct. There's nothing I would add to that response. Spot on, Joe, spot on. The link above reveals that, among many other things, 'Abdu'l-Bahá clarifies the importance of grasping the symbolic nature of biblical language, and the need for us (humanity) to refrain from a literal interpretation of the words contained therein, and in other spiritual books. He hints at the idea that it may not matter WHO actually prays. True. Sometimes we do pray for our friends and relatives, and for all of humanity. But every one of us has an obligation to pray.
When Muhammad, the Prophet and Apostle of God, Peace Be Upon Him, appeared in Arabia, He asked the Arabs why they had ignored and not accepted Jesus Christ. Of course they had no answer. He then commanded them to pray FIVE times a day in order to show obedience to God, and to atone for their blunder. For centuries these tribes had regarded war as a hobby. It's something they did constantly. You can well imagine what would happen to the war agenda, if one had to pray FIVE times a day! I'm inclined to think that obedience to this instruction would certainly dampen the zeal to constantly engage in such an occupation as war.
Quite apart from any physical condition that may result from prayer, 'Abdu'l-Bahá also mentioned that:
Spirit has influence; prayer has spiritual effect. Therefore, we pray, “O God! Heal this sick one!” Perchance God will answer. Does it matter who prays? God will answer the prayer of every servant if that prayer is urgent. His mercy is vast, illimitable. He answers the prayers of all His servants.