Then Jerusalem and all Judea and all the region about the Jordan were going out to him, and they were baptized by him in the river Jordan, confessing their sins. -Matthew 3:5-6
With repentance comes confession. Even in the time of Advent, when we look forward to the coming Messiah, we must remember the importance of confession:
That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. -Romans 10:9
Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much. -James 5:16, KJV
As we prepare for the Messiah, it has to include the preparation of our hearts, as we confess our sins to God and to others and are baptized.
God in Heaven, we have sinned against You. As we confess, we thank You that You are faithful to forgive.