Central doctrines
The material principle of Lutheranism is the doctrine of justification: salvation by God's grace alone (Sola Gratia), through faith alone (Sola Fide), revealed through scripture alone (Sola Scriptura). Lutherans believe this grace is granted for the sake of Christ's merit alone (Solus Christus). Traditional Lutheran theology holds that God made the world, including humanity, perfect, holy, and sinless. However, Adam and Eve chose to disobey God, trusting in their own strength, knowledge, and wisdom. Because of this Original Sin — the sin from which all other sins come — all humans are born in sin and are sinners. For Lutherans, original sin is the "chief sin, a root and fountainhead of all actual sins."
Lutherans teach that sinners cannot do anything (i.e. "good works") to satisfy God's justice. Every human thought and deed is colored by sin and sinful motives. Because of this, all humanity deserves eternal damnation in hell.God has intervened in this world because he loves all people and does not want anyone to be eternally damned. By God's grace, made known and effective in the person and work of Jesus Christ, a person is forgiven, adopted as a child and heir of God, and given eternal salvation. For this reason, Lutherans teach that salvation is possible only because of the grace of God made manifest in the birth, life, suffering, death, and resurrection, and continuing presence by the power of the Holy Spirit, of Jesus Christ (Gal. 3:13). Lutherans believe Jesus Christ is both by nature God (Col. 2:9) and by nature man (1 Tim. 2:5) in one person (John 1:14), as they confess in Luther's Small Catechism that he is "true God begotten of the Father from eternity and also true man born of the Virgin Mary".
Lutherans believe that individuals receive this gift of salvation through faith alone[2] — a full and complete trust in God's promises to forgive and to save (Heb 11:1). Even faith itself is seen as a gift of God, created in the hearts of Christians (Ps. 51:10) by the work of the Holy Spirit his means of grace, the Word (John 17:20, Rom. 10:17) and the Sacraments (Mat. 26:28, Tit. 3:5). It is important to note the words — through faith (Rom. 3:22), not by faith. Faith is seen as an instrument that receives the gift of salvation, not something that causes salvation (Eph. 2:8). Thus, Lutherans reject the so-called "decision theology" which is common among modern evangelicals.
Traditionally, Lutherans have accepted monergism, which states that salvation is by God's act alone, and reject the doctrine that humans in their fallen state have a free will concerning spiritual matters (1 Cor. 2:14, 12:3, Rom. 8:7). Instead, they believe that the elect are predestined to salvation (Acts 13:48, Eph. 1:4–11). Properly understood, the doctrine of predestination is simply another way of expressing the doctrine of salvation by grace alone. Lutherans disagree with those that make predestination the source of salvation rather than Christ's suffering, death, and resurrection. Unlike some in Calvinism, Lutherans do not believe in a predestination to damnation (1 Tim. 2:4, 2 Pet. 3:9).
Lutherans are not dogmatic about the number of the sacraments. Some speak of only two sacraments[13]: Holy Baptism and Holy Communion. They teach that Holy Baptism is a saving work of God (1 Pet. 3:21), mandated and instituted by Christ[14]. Thus it is administered to both infants (Mat. 19:14, Acts 2:38–39) and adults (1 Cor. 1:14). Children born to practicing Lutheran families are usually baptized shortly after birth. Holy Absolution (John 20:23) is also confessed to be a sacrament. Holy Communion, which the Lutherans also call the Sacrament of the Altar, the Holy Eucharist, or the Lord's Supper (1 Cor. 11:20), they believe to be the true body and blood of Christ "in, with, and under" the bread and wine for all those who eat and drink it (1 Cor. 10:16, 11:27), a doctrine that the Formula of Concord calls the Sacramental union.
Lutherans believe that all who trust in Jesus alone can be certain of their salvation, for it is in Christ's work and his promises in which their certainty lies (Rom. 8:33). They teach that, at death, Christians are immediately taken into the presence of God (2 Cor. 5:8), where they await the resurrection of the body at the second coming of Christ (1 Cor. 15:22–24). Lutherans do not believe in any sort of earthly millennial kingdom of Christ either before or after his second coming on the last day (John 18:36).
Although Lutherans believe that good works do not satisfy God's wrath, this is not to say that they hold good works to play no role in the Christian life (Tit. 2:14). Good works are the fruit of saving faith (John 15:5), and always and in every instance spring spontaneously from true faith (2 Cor. 9:8). Any true good works have their true origin in God (Phil 2:13), not in the fallen human heart or in human striving (Rom. 7:18, Heb 11:6); their absence would demonstrate that faith, too, is absent (Mat. 7:15–16, Tit. 1:16).










