This article explains the ways in which the sacraments are efficacious by virtue of participation in them. The Lord's Supper is a means by which the church manifests itself as one body, and baptism effects membership in the church and displays the shape of the church and its position over against the world.
What constitutes a sacrament? There are four elements, and the article explains them
What are sacraments? This article shows that sacraments are visible signs and seals of God’s invisible grace promised to his people in the gospel. Both baptism and Lord's Supper point us to the work of Christ.
Looking at Genesis 15, this article shows how God binds Himself to His people in the covenant through the promise of salvation. In this article, the author shows how this promise comes both verbally and visually, linking it to the preaching of the Word and the sacraments (baptism and the Lord's Supper).
Many divisions between church denominations can be traced back to differences in four doctrines: sola scriptura, freewill, the relationship between the Old and New covenant, and the sacraments. In this article, the author discusses the different positions on whether or not the sacraments are a means of grace.