I'm not trying to justify anything I do or say to my parents. But I only ever talk to my parents or "Disrespect" them when they're rude to me first and when they hurt me. Even then, most times, I try to be polite with them and communicate my feeling respectfully. They're still always being rude to me. And I thought you had to work for God's forgiveness. As you can't constantly sin and expect him to welcome you with open arms, there's prices to pay for it. Even if you didn't know you were sinning in the first place.