Even if you do not confess, God is not ignorant of the deed, since He knew it before it was committed. Why then do you not speak of it? Does the transgression become heavier by the confession? No, it become lighter and less troublesome.
And this is why He wants you to confess: not that you should be punished, but that you should be forgiven; not that He may learn your sin -how could that be, since He has seen it? – but that you may learn what favor he bestows. He wishes you to learn the greatness of His grace, so that you may praise Him perfectly, that you may be slower to sin, that you may be quicker to virtue.
And if you do not confess the greatness of the need, you will not understand the enormous magnitude of His grace….Therefore He has place within us a conscience more faithful than a father. For a father having warned his son once, or twice, or three times, or perhaps ten times, when he sees him remaining uncorrected, publicly renounces him and dismisses him from the house , and severs the tie of relationship.
But conscience does not act that way. For if once, or twice, or three times, or a thousand times it speaks, and you do not obey, it will speak again, and will not cease until the last breath; and both in the house and in the street, at table and in he market, and on the road, often even in dreams, it places before us the image and appearance of our sins.
John Chrysostom – Four Discourses 4.4
John Chrysostom was Bishop of Constantinople at the turn of the fifth Century. He is one of the Doctors of the Church, that is a great Christian writer who has benefited the whole Church. He was born in Antioch around 347AD and is generally considered to be the greatest preacher ever heard in a Christian pulpit, hence his nickname, “Chrysostom”, which means “Golden-Mouthed”.