he hurtling noise of battle may be loud in the plains,
but up upon the impregnable cliff crowned by its battlements there is a
central citadel, with a chapel in the heart of it; and to the
worshippers there none of the noise ever penetrates. The Gospel which
laps us in peace and puts it in our hearts makes us soldiers.

II. Further, this Gospel of peace will prepare us for the march.

A wise general looks after his soldiers' boots. If they give out,
nothing else is of much use. The roads are very rough and very long, and
there need to be strong soles and well-sewed uppers, and they will be
none the worse for a bit of iron on the heels and the toes, in order
that they may not wear out in the midst of the campaign. 'Thy shoes
shall be iron and brass,' and these metals are harder than any of the
rock that you will have to clamber over. Which being translated into
plain fact is just this--a tranquil heart in amity with God is ready for
all the road, is likely to make progress, and is fit for anything that
it may be called to do.

A calm heart makes a light foot; and he who is living at peace with God,
and with all disturbance within hushed to rest, will, for one thing, be
able to see what his duty is. He will see his way as far as is needful
for the moment. That is more than a good many of us can do when our eyes
get confused, because our hearts are beating so loudly and fast, and our
own wishes come in to hide from us God's will. But if we are weaned from
ourselves, as we shall be if we are living in possession of the peace of
God which passes understanding, the atmosphere will be transparent, as
it is on some of the calm last days of autumn, and we shall see far
ahead and know where we ought to go.

The quiet heart will be able to fling its whole strength into its work.
And that is what troubled hearts never can do, for half their energy is
taken up in steadying or quieting themselves, or is dissipated in going
after a hundred other things. But when we are wholly engaged in quiet
fellowship with Jesus Christ we have the whole of our energies at our
command, and can fling ourselves wholly into our work for Him. The
steam-engine is said to be a very imperfect machine which wastes more
power than it utilises. That is true of a great many Christian people;
they have the power, but they are so far away from that deep sense of
tranquillity with God, of which my text speaks, that they waste much of
the power that they have. A