Round the Sphere Again: Our Trinitarian God

The Basics
C. Michael Patton is writing a discipleship book chapter-by-chapter on the Parchment and Pen blog. Here is the chapter introducing our Trinitarian God.

More Advanced
John Starke on why the debate over the filoque clause matters (The Gospel Coalition Blog). Hint: It has to do with the authority of scripture.

[T]he Bible is a reliable source of our knowledge of God, and the language it uses about God gives us insight into who he is. And when the New Testament speaks of the Holy Spirit as the Spirit of Christ, not just the Spirit of God, it is telling us something important about how the Person of the Spirit relates to the Person of the Son (Rom. 8:9; 1 Pet. 1:11). It is Christ who baptizes with the Holy Spirit (Matt. 3:11; Acts 1:5; Acts 11:16). It is Christ who promises and sends the Spirit as the One who now mediates Christ’s active presence in the world. This becomes evidentially clear in the book of Acts, where the Spirit empowers the early Christians to be witnesses of Christ to the ends of the earth (Acts 1:8), and it is through the Spirit that Christ is with them to the end of the age (Matt. 28:20).