"What God promises He is able at any time to perform, and the work which He gives His people to do He is able to accomplish by them. If they will live according to every word He has spoken, every good word and promise will be fulfilled unto them. But if they come short of perfect obedience, the great and precious promises are afar off, and they cannot reach the fulfillment."
The following paragraphs contain some of the key quotes on praying for the sick from a chapter Testimonies for the Church, Vol. 2.
[Excerpts]
In the case of Sister F, there needed to be a great work accomplished. Those who united in praying for her needed a work done for them. Had God answered their prayers, it would have proved their ruin. In such cases of affliction, where Satan has control of the mind, before engaging in prayer there should be the closest self-examination to discover if there are not sins which need to be repented of, confessed, and forsaken. Deep humility of soul before God is necessary, and firm, humble reliance upon the merits of the blood of Christ alone. Fasting and prayer will accomplish nothing while the heart is estranged from God by a wrong course of action. “Is not this the fast that I have chosen? to loose the bands of wickedness, to undo the heavy burdens, and to let the oppressed go free, and that ye break every yoke? Is it not to deal thy bread to the hungry, and that thou bring the poor that are cast out to thy house? when thou seest the naked, that thou cover him; and that thou hide not thyself from thine own flesh?” “Then shalt thou call, and the Lord shall answer; thou shalt cry, and He shall say, Here I am. If thou take away from the midst of thee the yoke, the putting forth of the finger, and speaking vanity; and if thou draw out thy soul to the hungry, and satisfy the afflicted soul; then shall thy light rise in obscurity, and thy darkness be as the noonday: and the Lord shall guide thee continually, and satisfy thy soul in drought, and make fat thy bones: and thou shalt be like a watered garden, and like a spring of water, whose waters fail not.” {2T 145.1}
It is heartwork that the Lord requires, good works springing from a heart filled with love. All should carefully and prayerfully consider the above scriptures, and investigate their motives and actions. The promise of God to us is on condition of obedience, compliance with all His requirements. “Cry aloud,” saith the prophet Isaiah, “spare not, lift up thy voice like a trumpet, and show My people their transgression, and the house of Jacob their sins. Yet they seek Me daily, and delight to know My ways, as a nation that did righteousness, and forsook not the ordinance of their God: they ask of Me the ordinances of justice; they take delight in approaching to God. Wherefore have we fasted, say they, and Thou seest not? wherefore have we afflicted our soul, and Thou takest no knowledge?” {2T 146.1}
A people are here addressed who make high profession, who are in the habit of praying, and who delight in religious exercises; yet there is a lack. They realize that their prayers are not answered; their zealous, earnest efforts are not observed in heaven, and they earnestly inquire why the Lord makes them no returns. It is not because there is any neglect on the part of God. The difficulty is with the people. While professing godliness, they do not bear fruit to the glory of God; their works are not what they should be. They are living in neglect of positive duties. Unless these are performed, God cannot answer their prayers according to His glory. In the case of offering prayer for Sister F, there was confusion of sentiment. Some were fanatical and moved from impulse. They possessed a zeal, but not according to knowledge. Some looked at the great thing to be accomplished in this case and began to triumph before the victory was gained. There was much of the Jehu spirit manifested: “Come with me, and see my zeal for the Lord.” In place of this self-confident assurance, the case should have been presented to God with a spirit of humbleness and distrustfulness of self, and with a broken and a contrite heart. {2T 147.1} ... What God promises He is able at any time to perform, and the work which He gives His people to do He is able to accomplish by them. If they will live according to every word He has spoken, every good word and promise will be fulfilled unto them. But if they come short of perfect obedience, the great and precious promises are afar off, and they cannot reach the fulfillment. {2T 148.1}