Penetrating the Spiritual World Behind the Sense World

How are we able to penetrate the spiritual worlds behind that of our senses our sense worlds?

In answer to this question; we are all able to  learn how to use our inner forces and capacities in order to  penetrate into that of the spiritual worlds. Having stated that, how does this particular Gospel, The Gospel of St. John illuminate this for us??

[Keyed to chapter 1 of Book 1 in the “Simply Steiner” Series,  in The Gospel of St. John]

(Discussion Question 1)