When two of these strings were absent, there being only eight, the indication is apparently given that there would be a time when two important features of the divine plan would not be seen by men.

God promised that greater light should come upon his Word at the end of the age, or end of the world, which means the social order of things.

Since we have reached that time, we confidently look for more light and thus we find it.
[5]The Book of Revelation is written largely in symbols.

In Revelation 14:2,3 and 15:2,3 we find a brief description of a class of glorious beings who are playing upon their harps, and these are described as the 'harps of God'.

The harp here is used as a sign or symbol of some great truth, or feature of the divine program; in fact, a great deal of the Bible is written in symbolic phrase.