Answer:The purpose of each statement from Washington's address is given as follows:
Statement: vain would that man claim the tribute of patriotism, who should labor to subvert these great pillars of human happiness,
Purpose: to warn that anyone seeking to undermine religion and morality makes a poor American citizen
Statement: And let us with caution indulge the supposition that morality
can be maintained without religion
Purpose: to state that there are numerous ways in which our national well-being depends on religion and morality
Statement: A volume could not trace all their connections with private and public felicity.
Purpose: to suggest that the legal system must actively support issues touching on religious freedom
What is the purpose of a statement in literature?
The purpose of each statement is the reason for which the author wrote that statement: the message which the author is trying to communicate.