Berkhof, Louis – Summary of Christian Doctrine

In this 22 chapter doctrines book, Berkhof (Presbyterian and Reformed) looks at some typical systematic theology themes: Revelation, Scripture, Nature-Names-Attributes of God, the Trinity, Creation, Divine Decrees, Providence, Man, Sin, States and offices of Christ, Salvation and Sanctification.

Balfour- Foundations of Belief: Study of Theology

Balfour was a politican who also wrote some on philosophy and on religious matters. In this work he examines the foundations of belief, and looks at it from a comparacion with naturalism, and then some reasons and then some causes of belief, and a (philosophical) foundation for belief.

Slick, M. – Essential Doctrines of Christianity

The Bible itself reveals those doctrines that are essential to the Christian faith.  They are 1) the Deity of Christ, 2) Salvation by Grace, 3) Resurrection of Christ, 4) the gospel, and 5) monotheism.  These are the doctrines the Bible says are necessary.

This small article could very well determine whether you are in or out of the Christian Faith

Litmus Test: You have to believe items 1-5 to be in the Christian Faith.