How does Timothy Keller use imagery in The Reason for God: Belief in an Age of Skepticism?

Imagery:

"The Bible says that God's wrath flows from his love and delight in his creation. He is angry at evil and injustice because it is destroying its peace and integrity."

"'The cold-blooded massacres of the defenseless, the return of deliberate and organized torture, mental torment, and fear to a world from which such things had seemed well nigh banished—has come near to breaking my spirit altogether. 'Homo Sapiens,' as he has been pleased to call himself, is played out"'