Where did the doctrine of Trinity come from?

Where did the doctrine of Trinity come from?

We Christians talk a lot about trinity. Where does this doctrine of trinity come from? I do not find the word trinity in the Bible. How can one know that the Christian God is a Trinitarian God? And what is the significance of knowing that the Christian God is the God of trinity?

This comes from Early period of Church. Some Christians did not know God, son, and Holy Spirit, so pastors of that period concluded this meaning.

The two scriptures I go to for this are:

Genesis 1:26 New International Version (NIV)
26 Then God said, “Let us make mankind in our image, in our likeness, so that they may rule over the fish in the sea and the birds in the sky, over the livestock and all the wild animals, and over all the creatures that move along the ground.”


Genesis 3:22 New International Version (NIV)
22 And the Lord God said, “The man has now become like one of us, knowing good and evil. He must not be allowed to reach out his hand and take also from the tree of life and eat, and live forever.”

From these I can see God speaks of Himself as a plural: we, us. As I read through the Bible, God has three persons: The Father, the Son and the Holy Ghost (or Holy Spirit). Jesus even said:

Matthew 28:19-20 New International Version (NIV)
19 Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, 20 and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.”

Why would Jesus tell us to be baptized in the names of these three if they were not the whole being of God?

Nave’s Topical Bible This also can be researched at https://www.biblestudytools.com/concordances/naves-topical-bible/
Gen 1:26; 3:22; Isaiah 6:3,8; 11:2-3; 42:1; 48:16; 61:1-3; 63:9-10; Matt 1:18,20; 3:11,16; 12:18,28; 28:19; Mark 1:8; Luke 1:35; 3:16,22; 4:1,14,18; John 1:32-33; 3:34-35; 7:39; 14:16-17,26; 15:26; 16:7,13-15; 20:22; Acts 1:2,4-5; 2:33; 10:36-38; Romans 1:3-4; 8:9-11,26-27; 1Cor 2:10-11; 6:19; 8:6; 12:3-6; 2Cor 1:21-22; 3:17; 5:5; 13:14; Galatians 4:4,6; Philippians 1:19; Colossians 2:2; 2Thess 2:13-14,16; 1Tim 3:16; Titus 3:4-6; Hebrews 9:14; 1Peter 1:2; 3:18; 1John 5:6-7; Revelation 4:8
◦See GOD
◦See JESUS [Jesus, the Christ→]

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Scripture Proof for the Trinity.
a. In the Old Testament.
Some are of the opinion that the Old Testament contains no indications of the Trinity, but this is not correct. There are passages which indicate that there is more than one person in God, as for instance, where God speaks of Himself in the plural, Gen. 1:26; 11:7, when the angel of Jehovah is represented as a divine person, Gen. 16:7-13; 18:1-21; 19:1-22, and where the Spirit is spoken of as a distinct person, Isa. 48:16; 63:10. In addition to these there are some in which three persons are more or less clearly indicated, Isa. 48:16; 61:1; 63:9, 10.

b. In the New Testament.
It is perfectly natural that the New Testament proofs should be clearer than those of the Old, since it records the incarnation of the Son of God and the outpouring of the Holy Spirit. There are several passages in which the three persons are expressly mentioned, as in connection with the baptism of Jesus, Luke 3:21, 22, in the farewell discourses of Jesus, John 14-16, in the great commission, Matt. 28:19, in the apostolic blessing, II Cor. 13:13, and also in such passages as Luke 1:35; I Cor. 12:4-6, and I Peter 1:2.


Got very interested about Trinity since we had one wonderful class discussing about this topic!

Very interesting thing is the result of studying about this topic is …

Thank you for all your replies. This is a good start for me to study more about this topic. Thank you all again.

I would like to hear more from you.

I also noticed this Us when reading Genesis. Not trying to refute the idea of Trinity, but could He be adressing all Heaven dwellers/angels?

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