NOTES for Isa 62:1-12
There is a time for everything: for silent standing before God and for spoken ministry. First it is necessary that trust in God and readiness to follow Him take root in the heart, and then the hour comes when He calls one to preach. Such a time also comes for Isaiah's compatriots: after a series of trials, having become more spiritually mature, they must proclaim the Truth to all nations. The light of God must first shine in Jerusalem, but it will not shine only for its inhabitants; it is intended for all nations.
If so, then it is not enough for preachers to repeat memorized formulas; they must become conduits of the light that illumines the world, and therefore they must be capable of not clouding the light and not blocking it with their own darkness. This is much harder than repeating ready-made verbal blocks in a well-trained speech, but is it worth going out to preach if one is not open to the influence of the One about whom we preach? If we are ready to receive His transforming influence, then we will receive from Him the words needed for preaching as well.