The fact that repentance is not possible without examining ourselves was shown under the previous heading. And what is the point of examining ourselves unless we recognize our sins? What is the point of that recognition unless we admit that those sins are in us? What is the point of all three of these steps unless we confess our sins before the Lord, pray for his help, and then begin a new life, which is the purpose of the whole exercise? This is active repentance.
The fact that this is the sequence of actions to take is something we are all capable of realizing as we leave childhood and become more and more independent and able to reason for ourselves. We can see this from thinking of our baptism. The washing of baptism means regeneration; and during the ceremony our godparents promised on our behalf that we were going to reject the Devil and all his works. Likewise thinking of the Holy Supper, we have all been warned that in order to approach it worthily we have to repent from our sins, turn ourselves to God, and start a new life. We can also think of the Ten Commandments—the catechism that is in the hands of all Christians.
Six of the ten simply command us not to do evil things. If we do not remove these evils through repentance, we are unable to love our neighbor and even less able to love God, even though the Law and the Prophets, that is, the Word and therefore salvation, hinge on these two commandments [Matthew 22:40].
from Regeneration, Pages, 31, 32