when the hour may come
wherein God will, through preachers, perform his work in him.

3. Secondly, Paul shows the danger of neglecting the grace of God. He
boldly declares here that the preaching of the Gospel is not an
eternal, continuous and permanent mode of instruction, but rather a
passing shower, which hastens on. What it strikes, it strikes; what it
misses, it misses. It does not return, nor does it stand still. The
sun and heat follow and dry it up. Experience shows that in no part of
the world has the Gospel remained pure beyond the length of man's
memory. Only so long as its pioneers lived did it stand and prosper.
When they were gone, the light disappeared; factious spirits and false
teachers followed immediately.

Thus Moses announces (Deut 31, 29) that the children of Israel will
corrupt themselves after his death; and the book of Judges testifies
that so it really came to pass. Each time a judge died in whose days
the Word of God obtained sway, the people fell away and became more
wicked than before. King Joash did what was right so long as the high
priest Jehoiada lived, but after the latter's death this had an end.
And following the time of Christ and his apostles, the world was
filled with seditious spirits and false teachers. Paul, in fact,
declares (Acts 20, 29): "I know that after my departing grievous
wolves shall enter in among you, not sparing the flock." So also we
now have the pure Gospel. This is a time of grace and salvation and
the acceptable day; but should the world continue, this condition,
too, will soon pass.

4. To receive the grace of God in vain can be nothing else than to
hear the pure word of God which presents and offers his grace, and yet
to remain listless and irresponsive, undergoing no change at all.
Thus, ungrateful for the Word and unworthy of it, we merit the loss of
the Word. Such as these are described in the parable (Lk 14, 16-24)
where the guests bidden to the supper refused to come and went about
their own business, thus provoking the master's anger until he swore
they should not taste his supper.

Similar is Paul's threat here, that we may take heed and accept the
Gospel with fear and gratitude. Christ says (Jn 12, 35), "Walk while
ye have the light, that darkness overtake you not." I should think we
might have learned wisdom from experience--from the darkness we
suffered under the Papacy. But that is all forgotten; we show neither
gratitude nor amendment of life