Think of a husband and wife in a car, the wife tells her husband to turn right at the next junction and by mistake, he turns left. When he realises what he has done, he says to his wife “I’m sorry love, I went the wrong way.” But if that is all he does, it isn’t enough. His saying sorry isn’t getting them any closer to where they want to be; it isn’t even stopping them getting further away. To get where they want to be, he needs to stop the car, turn it around and go back on to the correct road that his wife told him to take in the first place. That is repentance.