'Do good in Thy good pleasure to Zion, build Thou the walls of
Jerusalem.'

The scene changes. Nehemiah and his workmen fade away; the walls of
Jerusalem become dim and obscure, and, in their place, we see coming
out, as in a dissolving view, other figures and another landscape. We
see the Master, Christ Jesus, standing in the midst of His countless
labourers and workmen, the great company of His faithful servants. We
notice that each one is working busily at the special work the Master
has given him to do, we see that this work is very varied, no two
labourers have exactly the same task. But in one respect we notice that
all the Master's servants are alike, they all carry a sword, for it is
not possible for any one to be a worker for Christ without also being at
the same time a soldier.

Nor is it difficult to see the reason of this, for, if we serve Christ,
we are certain to meet with opposition. The mighty hosts of hell will
come against us, to hinder and to oppose us.

Let us, then, be prepared for their attack. Let us set a watch against
them. Satan and his forces always watch for our weakest point. Let us
find out what that point is. What is the weak part of our defences? Is
it selfishness? Is it pride? Is it prayerlessness? Is it temper? Is it
an unkind spirit? Whatever it is by which we are most easily led astray,
that is our weak spot, and there we ought to set a double watch. David
had his weak spot, and he knew it: unguarded, hasty words were ever
coming out of his mouth, but he found out the weak point in his
defences, and there he set a strong and powerful guard. He called upon
God Himself to keep out the enemy at that weak place: