The truth that's clear is that even a Christian brother can indeed have misfortune, suffering or become
lost "sick" by wandering from the truth and be considered as a sinner in need of repentance and The Father's discipline. And the elders of the church can participate with God through their faithful prayers, laying on of hands and anointing of oil; thus participating in the will of The Father in turning back the misfortune, suffering or the sickly to Him. Thus saving the
lost misfortunate, suffering or sickly from lose of their soul in the 1st death. What's equally clear is that either with or without the elder's faithful prayers, a brother is a brother. And God will raise him up (even if He has to put him down to do it).
James 5:13-14 Is anyone among you suffering misfortune? He should pray. Is anyone cheerful? He should sing praise. Is anyone among you sick? He should summon the elders of the church and they should pray over him, anointing him with olive oil in the name of the Lord. And the prayer of faith will save the one who is sick, and the Lord will raise him up, and if he has committed sins he [a brother] will be forgiven.
It is blatantly obvious that James is talking about praying for physical misfortune suffering, sick and dying (their 1st death, not their 2nd) brothers in the church (for whatever reason they are misfortuned, suffering or sick).
Just as obvious as the fact that you cannot pray another un-repentant lost person into (or back into under your soteriology) salvation
against their will or God's will. Our effective prayers are participating with God's work, to be sure (including God disciplinary actions upon His people, suffering/famine, sickness and even dying). That's James' point. He says zero about praying or anointing a lost person into salvation.
But either way (with our prayers or without them) The Father's will is done on Earth as it is in Heaven.
And the prayer of faith will save the one who is sick ...James 5:16 Therefore confess your sins to one another, and pray for one another, so that you may be healed. The effective prayer of a righteous person accomplishes much.
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Do you think the prayers of a righteous person for an unrighteousness person accomplishes salvation?