No,It may be helpful but most time you won't understand what you read. It's better to slowly read and understand you're passage.
Five examples of questions:
Dost thou know who made thee? (from "The Lamb")
Little Lamb who made thee? (from "The Lamb")
What immortal hand or eye, Could frame thy fearful symmetry? (From "The Tyger")
In what distant deeps or skies,/ Burnt the fire of thine eyes? (from "The Tyger")
On what wings dare he aspire?/ What the hand, dare seize the fire? (from "The Tyger")
The tone of "The Lamb" is quiet. It asks the questions in a polite and gentle way. It is beautiful and innicent. On the opposite side, "The Tyger" has a tone full of fear and force.
The word harbingers as it is used in this excerpt is a person or thing that announces or signals the approach of another.
So that you can capture their attention and get their support.