In this sermon Doctrine Matters,  “Doctrine” is defined as “teaching.” What a church teaches is considered to be their doctrine. The apostle’s doctrine was the teaching of the apostles. There is safety in knowing what you believe. What you believe is of eternal significance. When you know what you believe, you will not fall into the pit of false doctrine. Your convictions and beliefs will protect and direct you. The knowledge of what is right will quickly uncover what is wrong. Doctrines become roots in our lives. They provide us with a strong anchor. No one wants to be a tree without roots, or a house built on the sand.