In his book, The Mortification of Sin, John Owen notes (among other things) the importance and necessity of having “a clear and abiding sense” in our minds and consciences of “the guilt, danger, and evil of sin” (p.65). Without a clear, biblical understanding of sin for what it really is, we will be ill-equipped to “put to death the deeds of the body” by the Spirit (Romans 8:13).
There he points out a number of the many dangers that sin poses to us, the first of which is the danger of being hardened by the deceitfulness of sin (Hebrews 3:13). He writes:
“This hardening is so serious that your heart becomes insensitive to moral influence. Sin leads to this. Every sin and lust will make a little progress in this direction. You who at one time were very tender and would melt under the influence of the Word and under trials will grow ‘sermon-proof’ and ‘trial proof.'” (p.68)
Sermon-proof. What a sobering phrase! It is bad enough that so many in our day simply avoid hearing the preaching of the Word in public worship altogether; but how much worse is the condition of those who, though they regularly attend the preaching of the Word, nevertheless have grown immune to its benefits.
Sermon-proof. That is a fitting description of the people of Isaiah’s day:
“‘Keep on hearing, but do not understand; keep on seeing, but do not perceive.’ Make the heart of this people dull, and their ears heavy, and blind their eyes; lest they see with their eyes, and hear with their ears, and understand with their hearts, and turn and be healed.” (Isaiah 6:9-10, ESV)
To be sermon-proof is to continually hear, but not understand, to see, but not perceive. And what is the end result? A refusal to “turn” (or repent) and “be healed.” No wonder the writer of the book of Hebrews warns us of the “deceitfulness of sin” (Heb. 3:13)!
Are you sermon-proof? Do not content yourself with the mere hearing of sermons. Hearing sermons is certainly a good start, but it is not nearly enough. Hearing sermons, even on a regular, weekly basis is no firm evidence that one is not sermon proof. One can hear sermons until the proverbial cows come home, and yet do so with no benefit whatsoever.
Let us learn to attend the preaching of God’s Word in public worship “with diligence, preparation, and prayer; receive it with faith and love, lay it up in our hearts, and practice it in our lives” (Westminster Shorter Catechism Q.90).
And, as the writer of the book of Hebrews puts it, let us “exhort one another every day, as long as it is called “today,” that none of you may be hardened by the deceitfulness of sin” (Hebrews 3:13, ESV).