A.W. Tozer emphasizes the challenge of distinguishing between truth and error in the Christian life, noting that both can appear similar and often coexist in the same environments. He warns that deception can be subtle, as seen in the biblical accounts of Isaac mistaking Jacob for Esau and the disciples failing to recognize Judas as the traitor. Tozer urges believers to remain vigilant and discerning, as appearances can be misleading, and what seems comforting may not always be from God. The sermon calls for a deeper examination of our spiritual companions and influences, reminding us that true wisdom comes from God.

There are areas of Christian thought, and because of thought then also of life, where likenesses and differences are so difficult to distinguish that we are often hard put to it to escape complete deception. Throughout the whole world error and truth travel the same highways, work in the same fields and factories, attend the same churches, fly in the same planes and shop in the same stores. So skilled is error at imitating truth that the two are constantly being mistaken for each other. It takes a sharp eye these days to know which brother is Cain and which Abel. We must never take for granted anything that touches our soul's welfare. Isaac felt Jacob's arms and thought they were the arms of Esau. Even the disciples failed to spot the traitor among them; the only one of them who knew who he was was Judas himself. That soft-spoken companion with whom we walk so comfortably and in whose company we take such delight may be an angel of Satan, whereas that rough, plain-spoken man whom we shun may be God's very prophet sent to warn us against danger and eternal loss.