"And the prayer offered in faith will make the sick person well; the lord will raise him up. If he has sinned, he will be forgiven." NIV translation
This verse tells us that the prayer offered by the elders in faith will make the sick person well. It does not say maybe or to do anything else and the faith is that of the elders and not the one to be healed.
There have been those who blame their inability to provide healing on the lack of faith of the sick but as we see here the faith that brings the healing is the faith of the ones doing the praying. The Lord will answer their prayers and the sick person will be healed and even sins will be forgiven.
"Therefore confess your sins to each other and pray for each other so that you may be healed. The prayer of a righteous man is powerful and effective." NIV translation
This verse reminds us of the need to admit our sins and not try to hide them. If we confess them and ask for forgiveness through prayer, we will be healed.
"Elijah was a man just like us. He prayed earnestly that it would not rain, and it did not rain on the land for three and a half years. Again he prayed, and the heavens gave rain, and the earth produced its crops." NIV translation
James gives us an example here, from 1 Kings 17 & 18, of how the prayers of a righteous man are answered. James reminds us that Elijah was a regular man like us and so we can have the same effectiveness in our prayers.
"My brothers, if one of you should wander from the truth and someone should bring him back, remember this: Whoever turns a sinner from the error of his way will save him from death and cover over a multitude of sins." NIV translation
My friends, this is our purpose here on earth today. We are to share the truth of God's Word so that people can turn away from their sin and be saved. When we do this, we demonstrate God's love and love covers sin just as God's love covered our sin through the blood of Jesus Christ.