The Bible does not teach that God is a trinity.
In the fourth century AD the Church adopted a nonsensical false doctrine which claims that God is a trinity made up of three persons, the Father, the Son and the Holy Spirit. The doctrine makes no sense and the Church admits that it is ‘incomprehensible’. This false doctrine is not found in the Bible.
If we find it hard to believe that the Church could adopt false doctrines, we must remember that this is the same Church which became the ‘Mother of Harlots’ in Revelation 17.
The Bible teaches that there is one God and that there are no gods beside him.
Deuteronomy 6:4 Hear, O Israel: The LORD our God is one LORD:
Isaiah 44:8 Fear ye not, neither be afraid: have not I told thee from that time, and have declared it? ye are even my witnesses. Is there a God beside me? yea, there is no God; I know not any.
Jesus Christ is God’s Son conceived by the Holy Spirit, which is the power of God, acting upon a virgin called Mary.
Luke 1:35 And the angel answered and said unto her, The Holy Spirit shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.
The Holy Spirit = The power of the Highest (God)
If the Holy Spirit is a person, then he would be the Father of Jesus and not God the Father.
Before he was born Jesus existed only in the plan and purpose of God.
1 Peter 1:20 ASV who was foreknown indeed before the foundation of the world, but was manifested at the end of times for your sake,
He was foreknown in exactly the same way as all who will be in the kingdom were foreknown. God knows the end from the beginning.
Romans 8:29 For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.
Jesus was born a man, subject to the same temptations that we all experience, but by strength of character overcame all temptation and lived a sinless life.
Hebrews 2:17 Wherefore in all things it behoved him to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people.
Hebrews 4:15 For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.
He gave his sinless life as a sacrifice so that the faithful can have their sins forgiven and be given eternal life.
Hebrews 10:12 But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God;
Acts 13:38 Be it known unto you therefore, men and brethren, that through this man is preached unto you the forgiveness of sins:
Ephesians 1:7 In whom we have redemption through his blood, the forgiveness of sins, according to the riches of his grace;
Because he did no sin God raised him from the dead and gave him eternal life. Jesus, now at the right hand of God, makes intercession for those who believe and obey the gospel.
Hebrews 7:25 Wherefore he is able also to save them to the uttermost that come unto God by him, seeing he ever liveth to make intercession for them.
He is our mediator and, as Paul points out, a mediator can’t be the same person as either of those between whom he mediates.
Galatians 3:20 Now a mediator is not a mediator of one, but God is one.
1 Timothy 2:5 For there is one God, and one mediator between God and men, the man Christ Jesus;
Jesus and his Father are not one as a unit, they are one in purpose. This is made clear by Jesus’ prayer:
John 17:11 And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are.
Jesus and his Father are one in the same way as all those who believe are one.
Jesus is NOT God because:
1. God is greater than Jesus
John 14:28 Ye have heard how I said unto you, I go away, and come again unto you. If ye loved me, ye would rejoice, because I said, I go unto the Father: for my Father is greater than I.
2. God knows more than Jesus
Mark 13:32 But of that day and that hour knoweth no man, no, not the angels which are in heaven, neither the Son, but the Father.
3. Jesus needed God to raise him from the dead.
Hebrews 5:7 Who in the days of his flesh, when he had offered up prayers and supplications with strong crying and tears unto him that was able to save him from death, and was heard in that he feared;
4. God has more authority than Jesus
Matthew 20:23 …to sit on my right hand, and on my left, is not mine to give, but it shall be given to them for whom it is prepared of my Father.
5. Jesus’ will is different from that of God
Luke 22:42 Saying, Father, if thou be willing, remove this cup from me: nevertheless not my will, but thine, be done.
6. After the millennial reign, Jesus will be subject to God for eternity.
1 Corinthians 15:28 And when all things shall be subdued unto him, then shall the Son also himself be subject unto him that put all things under him, that God may be all in all.
The Holy Spirit is not a person; it is the power of God by which all was created and is sustained, and by which God is everywhere present.
Job 26:13 By his spirit he hath garnished the heavens;
Job 33:4 The Spirit of God hath made me, and the breath of the Almighty hath given me life.
Psalms 139:7 Whither shall I go from thy spirit? or whither shall I flee from thy presence?
Pneuma (spirit) in Greek is neuter so when the translators give it a masculine pronoun (and thus personify it) they are displaying their trinitarian bias.
May I suggest that you read the following:
Jesus: God the Son or Son of God? (please click the title to read)
One God or a Trinity? (please click the title to read)
The Holy Spirit (please click the title to read)
I hope you find this helpful.