What was the special mission of John the Baptist?

Answer

"There was a man sent from God, whose name was John. The same came for a witness, to bear witness of
the Light, that all men through him might believe." John 1: 6, 7.

Upon what conditions is an understanding of divine things promised ?
What other book of the Bible is especially commended for our study?
Upon what basis does the reward come to one who works?
Whose presence does the Holy Spirit bring to the believers?
Who made the Sabbath day holy?
Whom should we fear and dread?
What were the colour and character of the fourth symbol?

Questions & Answers are from the book Bible Readings for the Home Circle