The means of grace in Christian theology are those things (the means) through which God gives grace. Just what this grace entails is interpreted in various ways: generally speaking, some see it as God blessing humankind so as to sustain and empower the Christian life; others see it as forgiveness, life, and salvation.
According to the Catholic Church, the means of grace that Christ entrusted to the Church are many. They include the entirety of revealed truth, the sacraments and the hierarchical ministry. Among the principal means of grace are the sacraments (especially the Eucharist), prayers and good works. The sacramentals also are means of grace.
The Church herself is used by Christ as a means of grace: "As sacrament, the Church is Christ's instrument. 'She is taken up by him also as the instrument for the salvation of all', 'the universal sacrament of salvation'." The conviction that the Church herself is the primary means of grace can be traced back to Irenaeus, who was expressing a common conviction when he said: "Where the church is, there is the Spirit of God; and where the Spirit of God is, there is the church, and every kind of grace." However, as the Second Vatican Council lamented, "although the Catholic Church has been endowed with all divinely revealed truth and with all means of grace, yet its members fail to live by them with all the fervor that they should". Catholics, Orthodox and some Protestants agree that grace is conferred through the sacraments, "the means of grace". It is the sacrament itself that is the means of grace, not the person who administers it nor the person who receives it, although lack of the required dispositions on the part of the recipient will block the effectiveness of the sacrament.
In Lutheranism, the Means of Grace are God's instruments by which all spiritual blessing are bestowed upon sinners. Lutheran churches teach that the means of grace are the ways that the Holy Spirit creates faith in the hearts of Christians, forgives their sins, gives them eternal salvation and causes them to grow spiritually. The efficacy of these means does not depend on the faith, strength, status, or good works of those who proclaim the Word of God or administer God's sacraments; rather, the efficacy of these means rests in God alone, who has promised to work through God's gift of these means to God's church.