We breath iniquity like air and drink it like water. We offend against God's law and God's nature every moment we live in this world. And, the more sharpsighted and clear-thinking among us know very well that we hardly know the hundredth part of our sin. Forgive my hidden faults. Things which we are mistaken about and which we regard as either indifferent or as positively good that are, in fact, sins.
Secret sins are also sins that escape our notice or recognize.
Many here too, but especially the sins of omission, a lack of proper passion for God, zeal for his name and cause, the actual practice of love of the brethren and the love of neighbor. I don't have always to develop this fact of our sinfulness or prove it. But, even Christians can be dulled to this reality. Confession of sin, each day, especially particular confession, makes honest men and women of us. And, given that we are speaking of our relationship with the living God, who looks upon the heart, it is essential that we not come to him dishonestly, as if we had some natural right to expect his favor.