The Role of Prayer and Missions in Salvation

God Has the Right and Power

Prayer is one of the great wonders that God has given to the world. That God would plan for his own sovereign hand to be moved by the prayers of his creatures is amazing. It is a thoughtless objection to say, “There’s no point in praying, since God has all things planned anyway.” It’s thoughtless because just a little thought would reveal that God has planned millions of human acts every day that cause other acts to happen.

A nail sinks into a board because God planned for a hammer to hit it. A student makes an A on a test because God planned for the student to study. A jet flies from New York to Los Angeles because God planned for fuel to be available, wings to stay put, engines to thrust, and a pilot to know what he is doing. In none of these cases do we say that the cause was pointless—the hammer, the studying, the fuel, the wing, the engine, the pilot.

Neither is prayer pointless. It is part of the plan. In fact, the all-embracing, all-pervasive, unstoppable providence of God is the only hope for making our most heartfelt prayers effective. What is your greatest longing? Your most heartfelt prayer? Probably it is for the salvation of someone you love.


John Piper

John Piper brings a lifetime of theology, Bible meditation, and pastoral ministry to bear on the doctrine of God’s providence, showing how God’s all-pervasive governing of all things glorifies Christ, and is spectacularly good news for those who trust him.

Or it may be for the liberation of your soul from some sinful bondage. When you pray that God would save your loved one or liberate you from bondage to sin, what are you asking God to do? You are asking him to do what he promised to do in the new covenant, which Jesus bought with his blood (which is why we pray in Jesus’s name). So we pray:

“God, take out of their flesh the heart of stone and give him a new heart of flesh” (see Ezek. 11:19).

“Lord, circumcise their hearts so that they love you” (see Deut. 30:6).

“Father, put your Spirit within them and cause them to walk in your statutes” (see Ezek. 36:27).

“Lord, grant them repentance and the knowledge of the truth that they may escape from the snare of the devil” (see 2 Tim. 2:25–26).

“Father, open their hearts so that they believe the gospel” (see Acts 16:14).

The only people who can pray like that are people who believe that saving faith is a gift of providence. Many people do not believe this, because they believe that human beings have the power of ultimate self-determination at the point of conversion. In other words, God can woo sinners, but he cannot create their faith. Man must have the final say. At the point when faith comes into existence, man, not God, is decisive.

My point here is that people who really believe this cannot consistently pray that God would convert unbelieving sinners. Why? Because if they pray for divine influence in a sinner’s life, they are either praying for a successful influence (which takes away the sinner’s ultimate self-determination), or they are praying for an unsuccessful influence (which is not praying for conversion). So they must either give up praying that God would convert people or give up ultimate human self-determination. Or go on acting inconsistently.

Prayer is a spectacular gift. No one believed more firmly than Paul that humans do not have the final say in their conversion, but that God does. “It depends not on human will or exertion, but on God, who has mercy” (Rom. 9:16). But probably no one prayed with more tears and more urgency than Paul for the conversion of sinners. “I have great sorrow and unceasing anguish in my heart . . . for the sake of my brothers, my kinsmen according to the flesh. . . . My heart’s desire and prayer to God for them is that they may be saved” (Rom. 9:2–3; 10:1). He prayed this way because he knew that the new birth is not a mere decision but a miracle. “With man this is impossible, but with God all things are possible” (Matt. 19:26). The providence we have seen in this book does not make prayer a problem. It makes prayer powerful.

That God would plan for his own sovereign hand to be moved by the prayers of his creatures is amazing.

Evangelism and Missions Are Essential

Just as thoughtless as the previous objection about prayer is the objection that says, “There is no point in evangelism and missions since God has planned whom he will save.” A moment’s thought will reveal that the plan to save people through the word of God includes the plan to send preachers of the word. No one believes and is saved without hearing the gospel. The new birth comes “through the living and abiding word”—the gospel:

You have been born again, not of perishable seed but of imperishable, through the living and abiding word of God. . . . And this word is the good news that was preached to you. (1 Pet. 1:23, 25)

This gospel is not written in the clouds. It is entrusted to Christians who become witnesses and missionaries. If there were no human witnesses, there would be no salvation:

“Everyone who calls on the name of the Lord will be saved.” How then will they call on him in whom they have not believed? And how are they to believe in him of whom they have never heard? And how are they to hear without someone preaching? And how are they to preach unless they are sent? . . . So faith comes from hearing, and hearing through the word of Christ. (Rom. 10:13–15, 17)

When Paul spoke of his own commissioning from the risen Christ, he described it in the most impossible terms. Jesus commissioned him to the Gentiles to do what only God can do. Jesus said to Paul:

I am sending you to open their eyes, so that they may turn from darkness to light and from the power of Satan to God, that they may receive forgiveness of sins and a place among those who are sanctified by faith in me. (Acts 26:17–18)

Open blind eyes. Liberate from Satan. That’s Paul’s mission. And ours. This is how the blind see and the enslaved are set free—by evangelism and missions. They are the instruments. But the instruments are not the miracle of conversion. They are another kind of miracle—the miracle of obedience. But we are talking here about evangelism and conversion. When the word is spoken, the Lord opens hearts. That is what we read about Lydia: “The Lord opened her heart to pay attention to what was said by Paul” (Acts 16:14). The word spoken by Paul is the essential instrument. The work of the Lord is the miracle of heart-opening conversion.

As in the case of prayer, the unthwartable providence of God is not a problem for evangelism and missions; it is their only hope of success. The obstacles to missions around the world today are insurmountable but for one thing: the providence of God is unstoppable. It cannot be stopped by closed countries. It cannot be stopped by hostile religions. It cannot be stopped by difficult languages and cultures. And it cannot be stopped by the ultimate self-determination of the fallen human soul—because in the world of God’s purposeful sovereignty, such self-determination does not exist.

We may and we must build our lives and our mission on this confidence. “I will build my church, and the gates of hell shall not prevail against it” (Matt. 16:18). And to that end: “This gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come” (Matt. 24:14).

This article is adapted from Providence by John Piper.

Related Articles

What Did Jesus Teach about Evangelism?

Jerram Barrs

When we look at Jesus’s life and ministry we also see that he was the greatest evangelist. In his earthly ministry he was the light of the world, the one who always lived in a way that was pleasing to his Father.

Related Resources

Crossway is a not-for-profit Christian ministry that exists solely for the purpose of proclaiming the gospel through publishing gospel-centered, Bible-centered content. Learn more or donate today at