II. The Christian's joy is full, the world's partial.
All human joys touch but part of our nature, the divine fills and satisfies all. In the former there is always some portion of us unsatisfied, like the deep pits on the moon's surface into which no light shines, and which show black on the silver face. No human joys wait to still conscience, which sits at the banquet like the skeleton that Egyptian feasters set at their tables. The old story told of a magician's palace blazing with lighted windows, but there was always one dark;--what shrouded figure sat behind it? Is there not always a surly 'elder brother' who will not come in however the musicians may pipe and the servants dance? Appetite may be satisfied, but what of conscience, and reason, and the higher aspirations of the soul? The laughter that echoes through the soul is the hollower the louder it is, and reverberates most through empty spaces.
But when Christ's joy remains in us our joy will be full. Its flowing tide will rush into and placidly occupy all the else oozy shallows of our hearts, even into the narrowest crannies its penetrating waters will pass, and everywhere will bring a flashing surface that will reflect in our hearts the calm blue above. We need nothing else if we have Christ and His joy within us. If we have everything else, we need His joy within us, else ours will never be full.
III. The heavenly joys are perpetual, the earthly joys transient.
Many of our earthly joys die in the very act of being enjoyed. Those which depend on the gratification of some appetite expire in fruition, and at each recurrence are less and less complete. The influence of habit works in two ways to rob all such joys of their power to minister to us--it increases the appetite and decreases the power of the object to satisfy. Some are followed by swift revulsion and remorse; all soon become stale; some are followed by quick remorse; some are necessarily left behind as we go on in life. To the old man the pleasures of youth are but like children's toys long since outgrown and left behind. All are at the mercy of externals. Those which we have not left we have to leave. The saddest lives are those of pleasure-seekers, and the saddest deaths are those of the men who sought for joy where it was not to be found, and sought for their gratification in a world which leaves them, and which they have to leave.
There is a realm where abide 'fullness of joy and pleasures for ever more.' Surely they order their lives most wisely who look for their joys to nothing that earth holds, and have taken for their own the ancient vow: 'Though the fig-tree shall not blossom, neither shall fruit be in the vine.... Yet I will rejoice in the Lord, I will joy in the God of my salvation.' If 'My joy' abides in us in its calm and changeless depth, our joy will be 'full' whatever our circumstances may be; and we shall hear at last the welcome: 'Enter thou into the joy of thy Lord.'