Whence the Trinity?

A lot of scuttlebutt on the Internet seems to assert that the Trinity is 'invented'. But, as Greg Koukl points out, the Trinity is a solution, not a problem.

Bob from Speakers' Corner in the UK put this logical set of Bible references together:

1. There is one God

Isaiah 45:5

“I am the Lord, and there is no other;
Besides Me there is no God.
I will gird you, though you have not known Me;

2. The Father is that God

John 17:1-3

This is eternal life, that they may know You, the only true God, and Jesus Christ whom You have sent.

3. Jesus is also called that God

Titus 2:13

looking for the blessed hope and the appearing of the glory of our great God and Savior, Christ Jesus,

4. The Holy Spirit is called that God

Acts 5:3-4

But Peter said, “Ananias, why has Satan filled your heart to lie to the Holy Spirit and to keep back some of the price of the land? ⁴ While it remained unsold, did it not remain your own? And after it was sold, was it not under your control? Why is it that you have conceived this deed in your heart? You have not lied to men but to God.”

5. Christ promises a 'helper'

John 15:26

“When the Helper comes, whom I will send to you from the Father, that is the Spirit of truth who proceeds from the Father, He will testify about Me,

6. The Holy Spirit is the helper promised by Christ

Acts 2:1-4

When the day of Pentecost had come, they were all together in one place. ² And suddenly there came from heaven a noise like a violent rushing wind, and it filled the whole house where they were sitting. ³ And there appeared to them tongues as of fire distributing themselves, and they rested on each one of them. ⁴ And they were all filled with the Holy Spirit and began to speak with other tongues, as the Spirit was giving them utterance.

7. Jesus aligns himself with God via the Old Testament

John 8:54-59

Jesus answered, “If I glorify Myself, My glory is nothing; it is My Father who glorifies Me, of whom you say, ‘He is our God’; ⁵⁵ and you have not come to know Him, but I know Him; and if I say that I do not know Him, I will be a liar like you, but I do know Him and keep His word. ⁵⁶ Your father Abraham rejoiced to see My day, and he saw it and was glad.” ⁵⁷ So the Jews said to Him, “You are not yet fifty years old, and have You seen Abraham?” ⁵⁸ Jesus said to them, “Truly, truly, I say to you, before Abraham was born, I am.” ⁵⁹ Therefore they picked up stones to throw at Him, but Jesus hid Himself and went out of the temple.