We cannot say why people pray what they pray before going to bed. We can only say that repentance is a turning away from sin. But that does not mean a person instantaneously never sins again. He shouldn't want to sin, but the flesh is weak and people can be tricked by the adversary. Rather than thinking of it as the phasing out of sin, a more biblical way of thinking about it is growth into maturity or the pursuit of perfection. When a person is born again, he is a spiritual baby. Like natural babies, he has a lot to learn. He must do a lot of growing up. Conquering sin is a life-long process. The moment we think we have arrived is about the time we are getting ready to take a spill. So the spiritual person gets up, confesses his sin, seeks Jesus for cleansing, and keeps on going. As Proverbs 24:16 says, 'For a righteous man may fall seven times
And rise again.'