Isaiah 52:7 says, “How beautiful upon the mountains are the feet of him who brings good news, who publishes peace, who brings good news of happiness” (ESV). Here God tells us directly that as His followers, our mission is bringing everyone the “good news of happiness” about Jesus. This shouldn’t be seen as a grim duty, but as a sheer delight and a privilege for us to do so. After all, the gospel is the best news there has ever been or ever will be!
Consider these thoughts from Lesslie Newbigin (1909-1998), a British theologian, missiologist, missionary, and author:
There has been a long tradition which sees the mission of the Church primarily as obedience to a command. It has been customary to speak of “the missionary mandate.” This way of putting the matter is certainly not without justification, and yet it seems to me that it misses the point. It tends to make mission a burden rather than a joy, to make it part of the law rather than part of the gospel. If one looks at the New Testament evidence one gets another impression. Mission begins with a kind of explosion of joy. The news that the rejected and crucified Jesus is alive is something that cannot possibly be suppressed. It must be told. Who could be silent about such a fact? The mission of the Church in the pages of the New Testament is more like the fallout from a vast explosion, a radioactive fallout which is not lethal but life-giving.
One searches in vain through the letters of St. Paul to find any suggestion that he anywhere lays it on the conscience of his readers that they ought to be active in mission. For himself it is inconceivable that he should keep silent. “Woe to me if I do not preach the gospel!” (1 Cor. 9:16). But no where do we find him telling his readers that they have a duty to do so.
…[In] the sermon of Peter on the day of Pentecost…something is happening which prompts the crowd to come together and ask, “What is going on?” The answer of Peter is in effect a statement that what is going on is that the last day has arrived and the powers of the new age are already at work, and that this is so because of the life, ministry, death, resurrection, and ascension of Jesus. The sermon leads up to a climax in the citing of the Psalm 110 (Acts 2:34). Jesus, whom they had crucified, is now seated at the right hand of God until all things are put under his feet. This is the reality which all human beings must henceforth take into account. The real government of the universe, the final reality which in the end confronts every human being, is the crucified and risen Jesus.
And to the question “What, then, are we to do?” the answer is “Repent and be baptized in the name of Jesus.” To repent is to do the U-turn of the mind which enables you to believe what is hidden from sight, the reality of the presence of the reign of God in the crucified Jesus. …To be baptized is to be incorporated into the dying of Jesus so as to become a participant in his risen life, and so to share his ongoing mission to the world. It is to be baptized into his mission.
His mission. It is of the greatest importance to recognize that it remains his mission. One of the dangers of emphasizing the concept of mission as a mandate given to the Church is that it tempts us to do what we are always tempted to do, namely to see the work of mission as a good work and to seek to justify ourselves by our works. On this view, it is we who must save the unbelievers from perishing. The emphasis of the New Testament, it seems to me, is otherwise.
Even Jesus himself speaks of his words and works as not his own but those of the Father. His teaching is the teaching of the Father, and his mighty works are the work of the Father. So also in the Synoptic Gospels, the mighty works of Jesus are the work of God’s kingly power, of his Spirit. So also with the disciples. It is the Spirit who will give them power and the Spirit who will bear witness. It is not that they must speak and act, asking the help of the Spirit to do so. It is rather that in their faithfulness to Jesus they become the place where the Spirit speaks and acts.
—Lesslie Newbigin, The Gospel in a Pluralist Society (Grand Rapids, 1989), pages 116-118.
My thanks to Ray Ortlund for first posting part of this excerpt on his excellent blog.
For more on the good news of happiness, see Randy's book Happiness as well as his book Does God Want Us to Be Happy?