I first came across the concept of offering forgiveness to God in a book by J. B. Phillips — I think — and it was a revelation to me. Not that God is doing wrong things to people that require actual forgiveness, but that people sometimes hold grudges against him that they really should let go. In other words, even if your theology says that God is perfect, your psychology might still be upset with him about something, and you should be willing to forgive those perceived offenses.
Caleb Wilde writes:
“Forgiving God” smacks against the core of what so many of us believe about God: namely, that He is good and that He’s love. Believing that God needs forgiveness — as though He’s done something wrong — is so far away from our conception about God that we simply don’t talk about it. …
And whether God actually needs the forgiveness isn’t what I’m talking about here. Whether or not God needs it is a moot point. The fact is, many of us need to extend it.
via Forgiving God.
Wilde was inspired to write about forgiving God on the 10th anniversary of a terrible shooting at an Amish schoolhouse. Charles Roberts’ own child had died years before and God hadn’t saved her. Roberts was out for revenge on God. He took the lives of five children before killing himself. I commend the whole article to you.