"O Lord, you awaken us to delight in your praise, for you made us for yourself, and our heart is restless, until it rests in you."
That's a quote from Augustine, Bishop of Hippo (A. D. 401) in his book, Confessions. He hits on something basic to us as human beings. God created us for relationship with himself and we are restless without him.
That relationship is what the Bible talks about. It's a subject that reaches to the very core of life. It addresses the issue of the restlessness, discontentment, loneliness, out-of-whackness, ill-at-easeness, wondering-what-it's-all-aboutness we all face in life...