Based on these and many other Bible verses Lutherans believe that every human being is in bondage to sin and cannot free themselves. Human beings cannot please God. Yet, God demands perfect obedience. Venial and Mortal sins. Venial sins are those sins that Christians commit.
Christians are no holy than thou.
They are sinners. But they are sinners who know they need a Savior and who confess their sins regularly to Christ in the worship service, before the pastor, and to each other. Mortal sins are deadly sins. They are acts of unbelief and rebellion against God. A person commits mortal sins when he or she refuses to acknowledge them as sins and who refuse to repent and confess before Christ.