God is one being that exists in three persons, Father, Son & Holy Spirit. They are not three beings or three Gods but one God in the same substance. 1 John 5:7 says, “For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one.” There is one God Ephesians 4:6. “One God and Father of all, who is above all, and through all, and in you all.” While, it is a bit of a mystery God is able to be one being yet, three substances, some use the analogy of water existing as solid, liquid and gas. However, this is hard to really put into words, but the Bible clearly teaches there is one being in Heaven. Jesus was and is God existing as one being with the Father. I am thankful for the great and wonderful mystery of the trinity. Amen