There’s a world of difference between feeling bad and being sorry.
A marker of that difference is whether the response to your wrongdoing is about managing the situation or seeking mercy.
Sarah Condon mentions the example of Judas:

This is where we learn the full meaning of what Judas has to teach us, one that’s less about betrayal and more about where we go with that betrayal, or you might say, how we handle sin. After all, a betrayal from one of the disciples should signal to us that our own betrayal of Jesus Christ is inevitable.
It is in how Judas handles his sin where the lesson is found.
Judas is seized with remorse. So he returns the bribe. But here’s the thing. He doesn’t find forgiveness. The chief priests send him away.
Remorse and redemption are an ocean apart. Judas has done what we all so often do. We try to fix the smallest part of our fallen selves. Because naming our sin and asking for mercy can require a humility we are unwilling to offer.
And so our sins follow us and haunt us, just as sin followed and haunted our brother Judas all the way to the grave.

Read the whole post at Mockingbird.