Watch lest the under-currents will capture you. There is an under-current at work; and in its outward manifestation, it is imitating the Spirit of God. And it is trying, and often succeeding , to carry with it many of God’s children because it is such a close copy, such a good imitation of the real thing. But try the spirits, says the Word. Test them, examine them so as to see whether they agree with the Blood, with Calvary and the Atonement. That is the supreme test. I tell you, the Apostolic Church believes in the Blood, believes that the only condition and basis of the world’s restoration is Calvary’s Cross. Let us watch the under-currents.
(D.P. Willliams, Penygroes Convention, 1933 – Riches of Grace, ix.5, May 1934, p.179)