Guilt is entirely useless to God and unbiblical to boot. The word guilt (ένοχος, meaning ‘liable for’) is in the New Testament, but it pertains to judicial rule, not the psychological black hole that it is in our modern parlance.
The New Testament isn’t about guilt. It’s about forgiveness. The lamb of God has taken away the sins of the world, not used them as a straightjacket. In Christ, at the dawn of creation, God has adorned us in an irremovable robe of forgiveness and pushed us back out into the party of life to enjoy the good news.
Christianity isn’t about getting forgiveness. It’s about learning how to cheer up in the forgiveness we’ve been wearing around all along without even knowing it.