The Spirit who alone creates faith is no less active after conversion than He was before. Our Augsburg Confession recognizes those things which keep society and government together as good works, but strictly speaking, they do not belong to a Christian's personal holiness and have no necessary relationship to justification. Unbelievers can do these works as can Christians. The works of sanctification are, strictly speaking, only those which Christians can do. They find their source, content and form in Christ's offering of Himself for others and are given to Christians by the Spirit who proceeds from the Father and the Son and who is sent into the world by the Son.
Sanctification is a Trinitarian act.
God dwells in the believer in order to accomplish what He wants. The Spirit who assisted Christ during the days of humiliation to do good to others and to offer Himself as a sacrifice to His Father is the same Spirit whom Christ by His death, resurrection and ascension gave to His Christians. Jesus, in requiring that we love God with our whole being and our neighbors more than ourselves, was not giving us an impossible goal to awaken in us a morbid sense of sinfulness. Nor was He speaking in exaggerated terms to make a point, but He was describing His own life and the life of His Christians who live their lives and die in Him. Like Christ, Christians trust only in God and sacrifice themselves for others.