When a Calvinist witnesses to the lost it isn't in vain. Is that right?
No it is not in vain. We are admonished to make ourselves a living testimony of our faith and tell all that
any who call upon the Lord will be saved.
God uses these actions as but one of the
means by which His
ends are accomplished, for He ordained the very means for His ends. We do not know who the unregenerate elect are, so we promiscuously share the Good News to all persons of every stripe. It is God who does the saving, not ourselves. God grants faith using the
means of our obedience, the
foolishness of preaching, what He has commanded.
A caution is needed here, however. It is one thing to proclaim that any who call upon the Lord will be saved and not turned away. It is indeed quite another thing, and grievous error, to begin that proclamation of the Good News with "God loves YOU!" While there is sense of God's love for all mankind, in that He restrains evil, pours out the rain upon the evil and the good. Yet that love is not a saving love, a love before time wherein God has set His preference upon another, that is reserved only for those that call upon the Lord, His chosen children.
Some of the most dedicated and admired evangelists since the time of the Reformation were Calvinists (Jonathan Edwards, George Whitefield, Charles Spurgeon, etc.). And they were consistent with their doctrine. They realized that God not only ordains whomsoever will be saved; He ordains the
means by which they will be saved -- namely, the preaching of the gospel. The Spirit moves the believer to spread the gospel, for that is his commission and one of the chief ends for which he was saved.
Then Arminians embrace a contradiction. And no matter how they dress it up with pithy sayings or sanctimonious platitudes, in the end it's still a contradiction. Thank goodness that logical consistency and sound reasoning aren't requisites to salvation in Christ.
Yes, the gospel is to be preached to all men and women. Moreover, it should be delivered persuasively and with conviction (Acts 18:28; 2 Cor 5:11). We do not know who the elect are, whose eyes the Spirit will open and whose stone heart God will replace. That is a secret not revealed to us (Deuteronomy 29:29).
As in the parable of the seed and the sower (Matthew 13:1-9), the evangelist is not to be a "soil sampler". Instead, he scatters the seed on all ground, preaching the good news of God's Kingdom to all men. Yet it is only the good soil that may receive the word in such a way that it takes root (c.f., Ezekiel 26:24-17 and John 3:1-12). The soil is not good in and of itself (Jeremiah 17:9; Romans 3:10-18). God makes it good (Matthew 12:33). And His word does not return to Him void, but accomplishes the purpose for which it is sent (Isaiah 55:11).
Anti-Calvinists can bash Calvinism and try to set it against evangelism, but history will sharply rebuke them. Calvinism has been and continues to be a strong motivation for preaching to the lost. I mentioned Edwards, Whitefield, and Spurgeon because they are well known (if in name only) to most Arminians. But the evangelistic zeal of Calvinism did not live and die with them. There is also William Burns, who led spiritual revival in China. Rowland Hill, who preached in England prior to Spurgeon. Robert Murray M'Cheyne of Scotland. David Brainerd, William Carey, John Flavel, Benjamin Keach, John Rippon, Christmas Evans, John Clifford, Archibald Brown, J. B. Moody, H. B. Taylor, I. M. Haldeman, Jeremiah Burroughs, George S. Bishop, T. T. Eaton, and Martin Lloyd-Jones. Latimer, Knox, Wishart, Perkins, Rutherford, Bunyan, Owen, Charnock, Goodwin, Watson, Henry, Watts and Newton.
The list goes on and on an on, completely shattering the anti-Calvinist's misguided notions about Calvinism and evangelism. The truth is that wherever Calvinism is embraced wholeheartedly, the gospel of Jesus Christ thunders forth with Spirit and conviction. Only in Arminian caricatures, wrought from warped and vain imaginations, do we find Calvinists ignoring the Great Commission.
AMR