What is doctrine?
What are the things that Christians believe in? It is not easy to answer this. Christianity is about faith groups and a range of denominations. Beliefs differ from denomination to denomination although they are all under a broad umbrella of Christianity. A system of beliefs that is taught or presented to be accepted is called doctrine. Doctrine means a lot more in scripture. It was explained as a religion, which was founded on the basis of the good news that was seen in the significance of the life of Christ. Doctrine, in scripture, is all the theological truths that describe the message of good news. All the historical facts are considered the message which include all the events that happened in the life of Jesus Christ. It is much more than just the biographical facts.
Doctrine essentially is teaching scripture based on theological truths. Traditional Christian doctrine consists of three major Christian college. They are the Nicene creed, the Athanasian creed and the Apostles creed. They express the fundamental beliefs of most of the Christian churches. Some churches may object to the practice of a creed but they may not object to the contents of the creed.
Some beliefs are common to most of the Christian faith groups. These are considered to be the core beliefs of Christianity. There may be a small number of groups who do consider themselves to be a part of Christianity but do not believe in some of these beliefs. Within some food groups there may be some variations or additions or even exceptions to the doctrines but all these groups fall under a broader group of Christianity. Some of the beliefs are:
God is the Father, The Son and the Holy Spirit. He is a Trinity.
There is only one God. God is omniscient, omnipotent and omnipresent. God is holy and sovereign. He is the creator of everything that exists. God is infinite and eternal, he will always be God. God does not change.
Plan of salvation
Humans were created by God. All people have sinned and dad came into the world because of Adams sin. Sin is what separates us from God. Jesus died to atone the sins of everybody in this world. He died for us so that we could live with him forever. Those who accept Jesus Christ completely will live forever with him even after they die.