The Bible clearly says that there is only one God. The Bible also reveals an eternal relationship of a Father and Son, as well as the activity of the Holy Spirit within the godhead. The Father, the Son, the Holy Spirit are all called “God” in the Bible, and we also see that they interact with each other. Already in Genesis 1:26, we see God saying: “Let us make man in our image.” In reality, this revelation is beyond human understanding, but some of our best ways of describing it are to say that our God is a “three-in-one God”, that there is one “what” but three “who’s”, or to say that God, in his essential nature, is “a Being in Relationship.”  It is interesting to note that this never seemed to bother the biblical writers who had no problem saying that the Father/Creator is God, that Jesus is God, and that the Spirit of God is also God. And so for them it was an uncomplicated acceptance of it all.

Personally, I find that a lot of the resistance to this idea hinges on Jesus. For people to believe in a God, and to believe that this God has a Holy Spirit who manifests as his personal presence–I think there is an easier acceptance for that kind of description. But Jesus, a human being who lived on the earth…he was also God? – That, I find is the major common stumbling block: to accept that Jesus is God, equal with the Father, but distinct from the Father.

Scripture references speaking to the Trinity:

On Jesus being God

Isaiah 9:6, John 1:1, John 8:58, John 20:28, Colossians 1:15-17, Colossians 2:9, Titus 2:13, Hebrews 1:3, 2 Peter 1:1, Revelation 1:8

On Jesus being distinct from the Father

Matthew 26:39, John 1:2, John 5:19-20, John 10:30, 1 Corinthians 8:6

Passages showing the Father, Son, and Spirit working harmoniously together

Matthew 3:16-17, Luke 1:35, John 14:26, Acts 1:4-5, Acts 10:38, Romans 1:1-4, Ephesians 2:18, 22 (the “him” is Jesus in this case), Hebrews 9:14, 1 Peter 1:2