When it is maintained that the church is concerned with civic affairs, is under obligation to examine political measures in the light of the Word of God, and is required to declare its judgments accordingly, the distinction between this activity on the part of the church and political activity must be recognized. To put the matter bluntly, the church is not to engage in politics. Its members must do so, but only in their capacity as citizens of the state, not as members of the church. The church is not to create or foster political parties or blocs. The proclamation of the church may indeed induce the members of the church and others to affiliate themselves, in their capacity as citizens, with one party rather than with another or, perhaps, to form a political party for the promotion of good politics. If the proclamation of the church is sound, the church has no need to be ashamed of the influence its proclamation exerts in this direction, nor does it need to be troubled by the charge that may be levelled against it to the effect that it is engaged in politics. In such circumstances the church must be prepared to pay the price for its faithful witness to the political implications of the message committed to it (256).
The question remains: how is the church to proclaim the counsel of God as it bears upon civil affairs? It is obvious that there are two means, in particular, of proclaiming the Word of God, namely, the pulpit and the press. The church lives in the world and it lives within the domain of political entities. If it is to be faithful to its commission it must make its voice heard and felt in reference to public questions. The church may not supinely stand aside and ignore political corruption, for example, on the ground that to pronounce judgment on such issues is to intermeddle in politics. Political corruption is sin, it is public sin, and the church denies its vocation if it does not reprove it. When there is political revolution which contravenes the principles of God’s Word and is directed against the kingdom of God, the church may not be an idle spectator on the round that the powers that be are ordained of God. It must assess the revolution for what it is in the light of the Word of God and proclaim in pulpit and press what the judgment of the Word of God is. If political revolution is right; if it displaces usurpation and tyranny, and is in the interests of equity, the church may not refrain from expressing by like media the favourable judgment which the principles of the Word of God dictate (257).
– John Murray, Collected Writings of John Murray 1: The Claims of Truth (Edinburgh: Banner of Truth Trust, 1976), 256, 257.