Oh brother....
Question: "What does the Bible teach about the Trinity?"
The Trinity is one God existing in three Persons. Understand that this is not in any way suggesting three Gods. Keep in mind when studying this subject that the word “Trinity” is not found in Scripture. This is a term that is used to attempt to describe the triune God—three coexistent, co-eternal Persons who make up God. Of real importance is that the concept represented by the word “Trinity” does exist in Scripture. The following is what God’s Word says about the Trinity:
2) The Trinity consists of three Persons (Genesis 1:1, 26; 3:22; 11:7; Isaiah 6:8, 48:16, 61:1; Matthew 3:16-17, 28:19; 2 Corinthians 13:14). In Genesis 1:1, the Hebrew plural noun "Elohim" is used. In Genesis 1:26, 3:22, 11:7 and Isaiah 6:8, the plural pronoun for “us” is used. The word "Elohim" and the pronoun “us” are plural forms, definitely referring in the Hebrew language to more than two. While this is not an explicit argument for the Trinity, it does denote the aspect of plurality in God. The Hebrew word for "God," "Elohim," definitely allows for the Trinity.
In Isaiah 48:16 and 61:1, the Son is speaking while making reference to the Father and the Holy Spirit. Compare Isaiah 61:1 to Luke 4:14-19 to see that it is the Son speaking. Matthew 3:16-17 describes the event of Jesus' baptism. Seen in this passage is God the Holy Spirit descending on God the Son while God the Father proclaims His pleasure in the Son. Matthew 28:19 and 2 Corinthians 13:14 are examples of three distinct Persons in the Trinity.
3) The members of the Trinity are distinguished one from another in various passages. In the Old Testament, “LORD” is distinguished from “Lord” (Genesis 19:24; Hosea 1:4). The LORD has a Son (Psalm 2:7, 12; Proverbs 30:2-4). The Spirit is distinguished from the “LORD” (Numbers 27:18) and from “God” (Psalm 51:10-12). God the Son is distinguished from God the Father (Psalm 45:6-7; Hebrews 1:8-9). In the New Testament, Jesus speaks to the Father about sending a Helper, the Holy Spirit (John 14:16-17). This shows that Jesus did not consider Himself to be the Father or the Holy Spirit. Consider also all the other times in the Gospels where Jesus speaks to the Father. Was He speaking to Himself? No. He spoke to another Person in the Trinity—the Father.
4) Each member of the Trinity is God. The Father is God (John 6:27; Romans 1:7; 1 Peter 1:2). The Son is God (John 1:1, 14; Romans 9:5; Colossians 2:9; Hebrews 1:8; 1 John 5:20). The Holy Spirit is God (Acts 5:3-4; 1 Corinthians 3:16).
5) There is subordination within the Trinity. Scripture shows that the Holy Spirit is subordinate to the Father and the Son, and the Son is subordinate to the Father. This is an internal relationship and does not deny the deity of any Person of the Trinity. This is simply an area which our finite minds cannot understand concerning the infinite God. Concerning the Son see Luke 22:42, John 5:36, John 20:21, and 1 John 4:14. Concerning the Holy Spirit see John 14:16, 14:26, 15:26, 16:7, and especially John 16:13-14.
6) The individual members of the Trinity have different tasks. The Father is the ultimate source or cause of the universe (1 Corinthians 8:6; Revelation 4:11); divine revelation (Revelation 1:1); salvation (John 3:16-17); and Jesus' human works (John 5:17; 14:10). The Father initiates all of these things.
The Holy Spirit is the means by whom the Father does the following works: creation and maintenance of the universe (Genesis 1:2; Job 26:13; Psalm 104:30); divine revelation (John 16:12-15; Ephesians 3:5; 2 Peter 1:21); salvation (John 3:6; Titus 3:5; 1 Peter 1:2); and Jesus' works (Isaiah 61:1; Acts 10:38). Thus, the Father does all these things by the power of the Holy Spirit.
There have been many attempts to develop illustrations of the Trinity. However, none of the popular illustrations are completely accurate. The egg (or apple) fails in that the shell, white, and yolk are parts of the egg, not the egg in themselves, just as the skin, flesh, and seeds of the apple are parts of it, not the apple itself. The Father, Son, and Holy Spirit are not parts of God; each of them is God. The water illustration is somewhat better, but it still fails to adequately describe the Trinity. Liquid, vapor, and ice are forms of water. The Father, Son, and Holy Spirit are not forms of God, each of them is God. So, while these illustrations may give us a picture of the Trinity, the picture is not entirely accurate. An infinite God cannot be fully described by a finite illustration.
The doctrine of the Trinity has been a divisive issue throughout the entire history of the Christian church. While the core aspects of the Trinity are clearly presented in God’s Word, some of the side issues are not as explicitly clear. The Father is God, the Son is God, and the Holy Spirit is God—but there is only one God. That is the biblical doctrine of the Trinity. Beyond that, the issues are, to a certain extent, debatable and non-essential. Rather than attempting to fully define the Trinity with our finite human minds, we would be better served by focusing on the fact of God's greatness and His infinitely higher nature. “Oh, the depth of the riches of the wisdom and knowledge of God! How unsearchable his judgments, and his paths beyond tracing out! Who has known the mind of the Lord? Or who has been his counselor?” (Romans 11:33-34).
Recommended Resource: Making Sense of the Trinity: Three Crucial Questions by Millard Erickson and The Forgotten Trinity by James White.
It never ceases to amaze me how people SAY they believe the bible, but when confronted with plain reading scripture, they reject it.
You don’t need the Reformation, Calvinism, Systematic Theology, or a Doctorate degree from the Seminary to be saved, nor to know the things of God.
The Disciples were NOT “learned” men, for a reason. They had not been “taught” the “right” way to think.
Romans 1:20 says that EVERYTHING you want to know about the Divine Nature of the Godhead, can be seen in the things God has made.
Do you believe Romans 1:20 or not? I do. If you take it on faith, God will speak to you through the General Revelation, and you will be privy to the truths of God’s nature. (This is the why nobody has an excuse for not “knowing” about God, and his nature). This is why people who grew up and NEVER heard the name Jesus can be saved, because God himself will give the faithful what they need to perfect their faith, just as Abraham’s faith was perfected, looking forward to Jesus (no, Abraham did not know that the Messiah’s name would be Jesus, or when/where he was born, but Jesus is the Lord of Salvation for all, OT and NT).
I believe in Sola Scriptura — no additional “points” needed. Nor Priest/Pastors that are Seminary trained are needed. The veil of the temple was rent. Jesus is our Priest, and he ministers to us directly. When we stop listing for the soft, quiet voice of God’s will and busy ourselves we lose contact with our Creator.
Like the Bereans, which were commended for searching the scriptures to see if what was being preached were true, WE the faithful should study and read the scriptures, putting more weight on the word of God than of man.