The needed emancipation can only be obtained by a ransom price. The question of to whom the ransom is paid is not in the horizon of prophet or apostle or of Jesus Himself, in using this metaphor. What is strongly in their minds is that a great surrender must be greatly made by the Emancipator.
Jesus conceived of Himself as giving 'His life a ransom for the many.'
The emancipation must be a divine act. It surpasses any created power.
There can be no happy pilgrims unless they are first set free.
II. The end of the journey.
'They shall come to Zion.' It is one great distinctive characteristic and blessedness of the Christian conception of the future that it takes away from it all the chilling sense of strangeness, arising from ignorance and lack of experience, and invests it with the attraction of being the mother-city of us all. So the pilgrims are not travelling a dreary road into the common darkness, but are like colonists who visit England for the first time, and are full of happy anticipations of 'going home,' though they have never seen its shores.
That conception of the future perfect state as a 'city' includes the ideas of happy social life, of a settled polity, of stability and security. The travellers who were often solitary on the march will all be together there. The nomads, who had to leave their camping-place each morning and let the fire that cheered them in the night die down into a little ring of grey ashes, will 'go no more out,' but yet make endless progress within the gates. The defenceless travellers, who were fain to make the best 'laager' they could, and keep vigilant watch for human and bestial enemies crouching beyond the ring of light from the camp-fires, are safe at last, and they that swallowed them up shall be far away.
Contrast the future outlook of the noblest minds in heathenism with the calm certainty which the gospel has put within the reach of the simplest! 'Blessed are your eyes, for they see.'
III. The joy of the road.
The pilgrims do not plod wearily in silence, but, like the tribes going up to the feasts, burst out often, as they journey, into song. They are like Jehoshaphat's soldiers, who marched to the fight with the singers in the van chanting 'Give thanks unto the Lord, for His mercy endureth for ever.' The Christian life should be a joyful life, ever echoing with the 'high praises of God.' However difficult the march, there is good reason for song, and it helps to overcome the difficulties. 'A merry heart goes all the day, a sad heart tires in a mile.' Why should the ransomed pilgrims sing? For present blessings, for deliverance from the burden of self and sin, for communion with God, for light shed on the meaning of life, and for the sure anticipation of future bliss.
'Everlasting joy on their heads.' Other joys are transitory. It is not only 'we poets' who 'in our youth begin with gladness,' whereof 'cometh in the end despondency and madness'; but, in a measure, these are the outlines of the sequence in all godless lives. The world's festal wreathes wilt and wither in the hot fumes of the banqueting house, and 'the crown of pride shall be trodden under foot.' But joy of Christ's giving 'shall remain,' and even before we sit at the feast, we may have our brows wreathed with a garland 'that fadeth not away.'
IV. The perfecting of joy at last.
'They shall obtain joy and gladness': but had they not had it on their heads as they marched? Yes; but at last they have it in perfect measure and manner. The flame that burned but dimly in the heavy air of earth flashes up into new brightness in the purer atmosphere of the city.