I'm currently reading The Confessions of St. Augustine as part of my daily devotions . The Modern English Version is very easy to read and offfers some deep reflections on being a sinnner, and yet being a child of God. Here is one excerpt which I found particularly moving.
"Oh that I might rest on You, Dear Lord.
Oh, that You would enter my heart and make it intoxicated, so that I might forget all woes and embrace You, my only good.
What are You to me? Take pity on me and teach me how to express it.
What am I to you that You demands my love and care enough to be angry and threaten me with grievous woes if I do not give it? It is no small woe if I do not love You."
Page 18; The Confessions of St. Augustine (Modern English Version)