That is to say, first of all, no slumber; not a moment's relaxation; or some of those who lie in wait for us on the way will be down upon us, and some of the precious things will go. While all the rest of the wearied camp slept, the guardians of the treasure had to outwatch the stars. While others might straggle on the march, lingering here or there, or resting on some patch of green, they had to close up round their precious charge; others might let their eyes wander from the path, they had ever to look to their charge. For them the journey had a double burden, and unslumbering vigilance was their constant duty.
We likewise have unslumberingly and ceaselessly to watch over that which is committed to our charge. For, depend upon it, if for an instant we turn away our heads, the thievish birds that flutter over us will be down upon the precious seed that is in our basket, or that we have sown in the furrows, and it will be gone. Watch, that ye may keep.
And then, still further, see how in this story before us there are brought out very picturesquely, and very simply, deeper lessons still. It is not enough that a man shall be for ever keeping his eye upon his own character and his own faculties, and seeking sedulously to cultivate and improve them, as he that must give an account. There must be another look than that. Ezra said, in effect, 'Not all the cohorts of Babylon can help us; and we do not want them. We have one strong hand that will keep us safe'; and so he, and his men, with all this mass of wealth, so tempting to the wild robbers that haunted the road, flung themselves into the desert, knowing that all along it there were, as he says, 'such as lay in wait for them.' His confidence was: 'God will bring us all safe out to the end there; and we shall carry every glittering piece of the precious things that we brought out of Babylon right into the Temple of Jerusalem.' Yet he says, 'Watch ye and keep them.'
What does that come to in reference to our religious experience? Why this: 'Work out your own salvation with fear and trembling; for it is God that worketh in you, both to will and to do of His own good pleasure.' You do not need these external helps. Fling yourself wholly upon His keeping hand, and also watch and keep yourselves. 'I know in whom I have believed, and that He is able to keep that which I have committed unto Him against that day,' is the complement of the other words, 'That good thing which was committed unto thee, keep by the Holy Ghost.'
So guardianship is, first, unceasing vigilance; and then it is lowly trust. And besides that, it is _punctilious purity_. 'I said unto them, Ye are holy unto the Lord; the vessels are holy unto the Lord. Watch ye, and keep them.'
It was fitting that priests should carry the things that belonged to the Temple. No other hands but consecrated hands had a right to touch them. To none other guardianship but the guardianship of the possessors of a symbolic and ceremonial purity, could the vessels of a symbolic and ceremonial worship be entrusted; and to none others but the possessors of real and spiritual holiness can the treasures of the true Temple, of an inward and spiritual worship, be entrusted. 'Be ye clean that bear the vessels of the Lord,' said Isaiah using a kindred metaphor. The only way to keep our treasure undiminished and untarnished, is to keep ourselves pure and clean.
And, lastly, we have to exercise a guardianship which not only means unslumbering vigilance, lowly trust, punctilious purity, but also requires the constant use of the treasure.