This prayer was reprinted in the Geneva Bible of 1599, and it is said to have originated with the early Protestant church there. I reprint it here now, because I find it a valuable devotion for daily prayer. I would encourage you to pray this or a similar prayer frequently.
For those unfamiliar with the language, a slightly modernized version will be printed below.
A Confession for All Estates and Times
O Eternal God and most merciful Father, we confess and acknowledge here before thy divine Majesty, that we are miserable sinners, conceived and born in sin and iniquity, so that in us there is no goodness. For the flesh evermore rebelleth against the spirit, whereby we continually transgress thy holy precepts and commandments: and so purchase to ourselves through thy just judgment, death and damnation.
Notwithstanding, O heavenly Father, for as much as we are displeased with ourselves for the sins that we have committed against thee, and do unfainedly repent us of the same, we most humbly beseech thee for Jesus Christ’s sake to show thy mercy upon us, to forgive us all our sins, and increase thy holy Spirit in us, that we acknowledging from the bottom of our hearts, our own unrighteousness, may from henceforth not only mortify our sinful lusts and affections, but also bring forth such fruits as may be agreeable to thy most blessed will, not for the worthiness thereof, but for the merits of the dearly beloved Son Jesus Christ our only Saviour, whom thou has already given an oblation and offering for our sins, and for whose sake we are certainly persuaded that thou wilt deny us nothing that we shall ask in his name, according to thy will.
For thy Spirit doth assure our consciences, that thou art our most merciful Father, and so lovest us thy children through him, that nothing is able to remove thy heavenly grace and favor from us. To thee therefore, O Father, with the Son, and the holy Ghost, be all honor and glory world without end, Amen.
Eternal God and most merciful Father, we confess and accept here, before your Godly Majesty, that we are miserable sinners. We are born in sin and iniquity, conceived in sin, and in us there is no goodness. As we know, the flesh is at war with the spirit in us, so that we are always breaking your holy laws and commandments. So, by our sins, we justly earn for ourselves your justice, the sentence of which is death and damnation evermore.
Even so, O heavenly Father, we are deeply displeased and ashamed of ourselves, for the sins that we have committed against You. We repent of these sins without reservation or hesitation, and we most humbly beg you, for the sake of Jesus Christ, to show mercy on us. Please, Lord, forgive us all our sins and give us ever greater measure of the Holy Spirit in us. We acknowledge from the bottom of our hearts that we are most unrighteous, and we beg your favor so that we can not only become ashamed of and avoid further sinful lusts and affections, but also produce fruits of goodness and love that will be acceptable in your sight, by your most blessed and holy will. And we know that these fruits are not good enough for you, and we are not worthy of any good thing from you, but we ask these things for the sake of your beloved Son, Jesus Christ, our only Savior, who you have already given to us as a sacrifice and offering for our sins. For His sake, we are certain and convinced that You will give us all that we shall ask in His name, so long as it is Your Will to give it to us.
For your Spirit assures us all the way to the bottom of our hearts, that you are our most merciful and loving Father. You so love us, your children through Christ, that there is nothing in heaven or on earth that can remove your heavenly grace and favor from us.
To you, therefore, Our Father, with the Son, and with the Holy Spirit, be all glory and honor in this world and the world to come.