One of the most common arguments forwarded casually by new atheists is called the "problem of silence." It will be phrased in the form of a question, like "Why should I believe in a God who is so difficult to see?" In essence, they are asking a rhetorical question that implies a syllogism:
P1: God is not manifestly evident to me.
P2: The Christian God, if true, wants me to know Him.
P3: A God who wants me to know Him would make Himself manifestly evident to me.
C: The Christian God is not true (does not exist).
There are several responses: