Today we begin a series of sermons that are on a central subject of theology. We'll dive into the Spurgeon Sermon archives to look for Spurgeon's comments on the subject of theology itself (today's sermon), the Bible, God the Father, the Son, the Holy Spirit, mankind, salvation, the church, and the end times. In today's sermon, Spurgeon gives some basic core beliefs about theology and shows what happens when we stray from sound doctrine.