From whence comes this unifying effect of the great confessions? It is explained by the fact that in the churches which still take their confession seriously something of that great earnestness is still alive with which the Word of God requires us to give consideration to questions of doctrine. This is the case also tehre, indeed, directly there, where the great confessional churches stand over against each other as such. … The serious Roman Catholic, the serious Lutheran, the serious Calvinist, the serious Anglican, the serious Baptist—all stand nearer to the eternal truth than the one who hazards making no confession because he maintains that the truth is finally undiscernable. And because of this, they also stand closer to each other.
H. Sasse, ‘The Question of the Church’s Unity on the Mission Field’, in The Lonely Way II, 194.