How do we Lutherans confess our sins? Well, certainly the preferable form is private confession and absolution, but we have a number of public forms we use as well. What follows are the various confessions used in LSB. Note that rather than having us confess particular sins (that's where private confession comes in!), we confess in general terms our sinfulness. We don't try to hold anything out as beyond the scope of forgiveness, but acknowledge that we need this forgiveness through and through because of the sinful corruption of our nature:
Divine Service I and II and optional in V:
Most merciful God, we confess that we are by nature sinful and unclean. We have sinned against You in thought, word, and deed, by what we have done and by what we have left undone. We have not loved You with our whole heart; we have not loved our neighbor as ourselves. We justly deserve Your present and eternal punishment. For the sake of Your Son, Jesus Christ, have mercy on us. Forgive us, renew us, and lead us, so that we may delight in Your will and walk in Your ways, to the glory of Your holy name. Amen. [Lutheran adaptation of a confession from the Book of Common Prayer]
Divine Service III and optional in V and in Corporate Confession and Absolution and on Maundy Thursday:
O almighty God, merciful Father, I, a poor, miserable sinner, confess unto You all my sins and iniquities with which I have ever offended You and justly deserved Your temporal and eternal punishment. But I am heartily sorry for them, and sincerely repent of them, and I pray You, of Your boundless mercy, and for the sake of the holy, innocent, bitter suffering and death of Your beloved Son, Jesus Christ, to be gracious and merciful to me, a poor, sinful being. [Saxony, 1581]
Divine Service III (optional)
(Pastor): Almighty God, our maker and redeemer, we poor sinners confess unto You that we are by nature sinful and unclean and that we have sinned against You by thought, word, and deed. Wherefore we flee for refuge to Your infinite mercy, seeking and imploring Your grace for the sake of our Lord Jesus Christ.
(all): O most merciful God, who has given Your only-begotten Son to die for us, have mercy upon us and for His sake grant us remission of all our sins; and by Your Holy Spirit increase in us true knowledge of You and of Your will and true obedience to Your Word, to the end that by Your grace, we may come to everlasting life; through Jesus Christ, our Lord. [Mecklenburg, 1545]
Divine Service IV:
(spoken as the invitation to confession by the pastor): Since we are gathered to hear God's Word, call upon Him in prayer and praise, and receive the body and blood of our Lord Jesus Christ in the fellowship of this altar, let us first consider our unworthiness and confess before God and one another that we have sinned in thought, word, and deed, and that we cannot free ourselves from our sinful condition. Together as His people let us take refuge in the infinite mercy of God, our heavenly Father, seeking His grace for the sake of Christ, and saying: God be merciful to me, a sinner.
(to which all respond): Almighty God, have mercy upon us, forgive us our sins, and lead us to everlasting life.
(first option): I confess to God Almighty, before the whole company of heaven and to you, my brothers and sisters, that I have sinned in thought, word, and deed by my fault, by my own fault, by my own most grievous fault; wherefore I pray God Almighty to have mercy on me, forgive me all my sins, and bring me to everlasting life. Amen. [from the ancient Roman Confiteor at the start of the Mass and at Compline]
(second option): Holy and gracious God, I confess that I have sinned against You this day. Some of my sin I know - the thoughts and words and deeds of which I am ashamed - but some is known only to You. In the name of Jesus Christ, I ask forgiveness. Deliver and restore me that I may rest in peace. [adaptation of LBW]
Note that while Confession and Absolution is a regular feature of the Divine Service, in Lutheran use it shows up in the Daily Office only in Compline - unlike typical Anglican use.