In the beginning was the Word, and the Word was with God, and the Word was God. He was in the beginning with God. All things were made through Him (John 1:1-3).

Deuteronomy 6:4, Colossians 1:16, John 1:1

You are wondering about a very important teaching from the Bible. But there is more here—the Holy Spirit. God is three distinct persons— Father, Son, and Holy Spirit—and each is fully God, yet there is only one God. This is especially hard for us to understand. But remember, God is not like anything else in the whole world. 

This might help you to understand a little. In the first chapter of the Bible, God says, “In the beginning God.” Now there are some very smart people who study the Bible. These people tell us that the way the word “God” is used here means more than one person. As we read Genesis, we learn that God’s Spirit was there at creation, that God Himself spoke all of creation into existence, and Jesus is called the Creator. He is the Creator, and the One who stepped into history and became a man. He did this to help us know God better and to show us how we could one day be with God the Father, God the Son, and God the Holy Spirit.

Nancy, because we are created in God’s image, we are like Him in some ways— we can think abstractly, love, have relationships, and so on. But there are many things very different from us that are hard to understand, and these make God who He is—He is eternal, and He is the triune God. He is one but more than one.