In praying for the sick, it should be remembered that “we know not what we should pray for as we ought.” [Romans 8:26.] We do not know whether the blessing we desire will be best or not. Therefore our prayers should include this thought: “Lord, Thou knowest every secret of the soul. Thou art acquainted with these persons. Jesus, their Advocate, gave His life for them. His love for them is greater than ours can possibly be. If, therefore, it is for Thy glory and the good of the afflicted ones, we ask, in the name of Jesus, that they may be restored to health. If it be not Thy will that they may be restored, we ask that Thy grace may comfort and Thy presence sustain them in their sufferings.” GW 217.2
God knows the end from the beginning. He is acquainted with the hearts of all men. He reads every secret of the soul. He knows whether those for whom prayer is offered would or would not be able to endure the trials that would come upon them should they live. He knows whether their lives would be a blessing or a curse to themselves and to the world. This is one reason why, while presenting our petitions with earnestness, we should say, “Nevertheless not my will, but Thine, be done.” [Luke 22:42.] Jesus added these words of submission to the wisdom and will of God when in the garden of Gethsemane He pleaded, “O My Father, if it be possible, let this cup pass from Me.” [Matthew 26:39.] And if they were appropriate for Him, the Son of God, how much more are they becoming on the lips of finite, erring mortals! GW 218.1
The consistent course is to commit our desires to our all-wise heavenly Father, and then, in perfect confidence, trust all to Him. We know that God hears us if we ask according to His will. But to press our petitions without a submissive spirit is not right; our prayers must take the form, not of command, but of intercession. GW 218.2
There are cases where God works decidedly by His divine power in the restoration of health. But not all the sick are healed. Many are laid away to sleep in Jesus. John on the Isle of Patmos was bidden to write, “Blessed are the dead which die in the Lord from henceforth: Yea, saith the Spirit, that they may rest from their labors; and their works do follow them.” [Revelation 14:13.] From this we see that if persons are not raised to health, they should not, on this account, be judged as wanting in faith. GW 218.3
We all desire immediate and direct answers to our prayers, and are tempted to become discouraged when the answer is delayed or comes in an unlooked-for form. But God is too wise and good to answer our prayers always at just the time and in just the manner we desire. He will do more and better for us than to accomplish all our wishes. And because we can trust His wisdom and love, we should not ask Him to concede to our will, but should seek to enter into and accomplish His purpose. Our desires and interests should be lost in His will. GW 219.1
These experiences that test faith are for our benefit. By them it is made manifest whether our faith is true and sincere, resting on the word of God alone, or whether, depending on circumstances, it is uncertain and changeable. Faith is strengthened by exercise. We must let patience have its perfect work, remembering that there are precious promises in the Scriptures for those who wait upon the Lord. GW 219.2
Not all understand these principles. Many who seek the Lord's healing mercy think that they must have a direct and immediate answer to their prayers or their faith is defective. For this reason those who are weakened by disease need to be counseled wisely, that they may act with discretion. They should not disregard their duty to the friends who may survive them, or neglect to employ nature's agencies for the restoration of health. GW 219.3
Often there is danger of error here. Believing that they will be healed in answer to prayer, some fear to do anything that might seem to indicate a lack of faith. But they should not neglect to set their affairs in order as they would desire to do if they expected to be removed by death. Nor should they fear to utter words of encouragement or counsel which at the parting hour they wish to speak to their loved ones. GW 219.4