It’s fairly easy to coast through the Christian life without thinking too deeply about the essentials of our faith. Every child of God knows the basics of the gospel, since they are necessary for salvation. But once we are saved, we need to grow in our understanding of the doctrines that are foundational for Christianity.
We must believe that the Bible is true. Scripture is the heavenly Father’s self-revelation about His nature, plan of salvation, and dealings with mankind. It’s the final authority on life, faith, salvation, and conduct (2 Peter 1:3), and we can trust that it’s without error because God inspired its writers and protected its transmission throughout history (2 Timothy 3:16).
There is only one God who expresses Himself in three persons—Father, Son, and Spirit. The concept of the Trinity is supported in numerous Scriptures, including Jesus’ baptism when all three were present and the Great Commission in which we are told to make disciples and baptize them in one name—that of the Father, Son, and Holy Spirit (Matt. 3:16-17; Matt. 28:19).
The Lord is the Creator of all things. As His creatures, we exist for Him and through Him, and He has authority and power over us (1 Corinthians 8:6). God is not simply a greater version of us; He is in a totally different category because He is self-existent and the source of life. We, on the other hand, are dependent upon Him for our next breath.
These three essentials keep us grounded in the truth. If we doubt them, we will find ourselves deceived by other doctrines (Eph. 4:14).