Cole Biblical Theology of The New Testament is a 23 chapters work and is a biblical study on different NT theology topics
Cheung, Vincent – Systematic Theology Professor Cheung’s Systematic Theology is a good Reformed Calvinistic theological work which he has put into the public domain
Pink, Arthur – Godliness of God Pink’s superb 20 page article, “The Godhood of God”. Read this very carefully. You will not be disappointed.
Thomas Watson Body of Practical Divinity is a set of sermons on different doctrinal topics of the Westminster Catechism.
Chesterton G.K. – Orthodoxy speaks to the truth and fundamental doctrines of Christianity as opposed to those who would compromise between the Devil and God.
Cox details the evidence for the doctrine of the Trinity in the Bible looking dozens of different angles.
In this very short 2 chapter work, Austin-Sparks (Deeper Life) presents us with the “horizoned by glory”. To be horizoned by something is to be completely overwhelmed by it.