Faithful and Diligent use of the Divinely Ordained Means of Grace

From here:

Since it is only through the external means ordained by Him that God has promised to communicate the grace and salvation purchased by Christ, the Christian Church must not remain at home with the means of grace entrusted to it, but go into the whole world with the preaching of the Gospel and the administration of the Sacraments, Matt. 28:19, 20; Mark 16:15, 16. For the same reason also the churches at home should never forget that there is no other way of winning souls for the Church and keeping them with it than the faithful and diligent use of the divinely ordained means of grace. Whatever activities do not either directly apply the Word of God or subserve such application we condemn as “new methods,” unchurchly activities, which do not build, but harm the Church (my emphasis).