Understanding the Trinity as a doctrine.

Ok, we both know that the fullness of the godhead was in Jesus.

Do we both know that there were not two or three Spirits dwelling in Christ (Ephesians 4:4)?

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How important is it to understand the Trinity?
John 17: 3 And this is life eternal, that they might know Thee, the only true God, and Jesus Christ, whom thou hast sent.
To those that claim that the Trinity is a mystery beyond our understanding, from a brother who loves you, you had better do a better job of investigating before giving up and declaring " It's a mystery."
Knowing the Father, Son, and Holy Spirit is the basis for understanding Scripture.
Eph 1: 3 It is the Father who is the God of Jesus and who blesses us with spiritual blessings in Christ. We are in Christ when we become part of Christ's body. This happens when we receive the Father's Spirit which was given to Jesus when Jesus was glorified.
Eph 1:2 Grace and peace comes from God, our Father, and from the Lord Jesus. That is two separate entities.
Eph 1: 17 The God of our Lord Jesus is the Father of glory because it is His Spirit that is given to Jesus and the Saints. It is His Spirit that gives us direction and revelation in the knowledge of Him. (truth)
Eph 1: 18 The Father's Spirit through Jesus helps us understand that we are called by the Father and as part of Jesus' glorified body will inherit all the love and blessings given to Jesus.
Eph 1: 19 This love and blessings are given to those that believe,
Eph 1: 20 and comes through Jesus Christ, who is placed at the Father's right hand. At the Father's right hand implies that the Father's will is perpetrated through Christ.
Eph 1: 21 Because of this position, Jesus is above all things,
Eph 1: 1: 22 and as part of His body, so are we.
Eph 1: 23 The Church is defined as Christ's body. Christ's body is filled by the Father through His Spirit which He bestows on those that receive His grace and joins with our spirit to form spiritual parts of Jesus' body. We become new creations with our hearts filled with love for God and people. Our desire is to do the Father's will which is with love for Him and for all people.
Heb 1: 1 During Old Testament times the Father would communicate with the prophets by filling them with His Spirit who then would communicate His message to the fathers and their people.
Heb 1: 2 In the Apostalic Age, the Father's message is relayed through Jesus Christ who made and maintains the worlds by the power of the Father's Spirit.
Heb 1: 3 Jesus is so full of the Father's Spirit that the Father can express Himself completely through His Son ( who is given power to perpetrate His will to purge our sins.
Heb 1: 4 If my right hand picks up a pencil, why did my right hand pick up the pencil? It is because I willed it. My brain sends a message through nerve impulses to my body parts so that they can work together for the life of the body. The Father is " the Majesty on high" and His right hand is the Spirit of the Christ ( who was created to execute the Father's will). This position puts Jesus Christ above the angels since He was the first creation through which everything else is created.
Heb 1: 5-7 Since Jesus is above the angels, He is to be worshipped by them.
Heb 1: 8 The Father gives Jesus a kingdom to rule forever, made up of righteous beings who worship Him as a God.
Heb 1: 9 Jesus' God ( the Father) has anointed Jesus with the oil of gladness above all created beings because Jesus loves righteousness ( doing the Father's will) and hates iniquity ( disobeying His will).
Heb 1: 10-14 The Father, through His Spirit in Jesus, created our universe and the angels, who were created to minister to Jesus, will now minister to His Spiritual body which is made up of the saints who are the heirs of salvation.

The Greek word for "and" there is "kai" which can be translated "even". No, they are one entity (John 10:30).

The Father is the Spirit (John 4:23-24) who dwells in Jesus (John 14:7-11)...the Father is the one Spirit (Ephesians 4:4) of holy scripture.

God communicated to the prophets using the Spirit of Christ (1 Peter 1:11). The Spirit of Christ is the one Spirit (Ephesians 4:4) of holy scripture.

Without Christ nothing was made that was made (John 1:1-3) and the LORD Jehovah created all things by Himself and all alone (Isaiah 44:24).

This would indicate that Christ is Jehovah; even His incarnation.

I agree; but would say that God alone is to be worshipped.

You would do well to believe in one God (James 2:19).

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To get the fulll blessings from my post, you need to read each scripture followed by my comment. I do worship the One true God and I worship Jesus Christ who is my Lord and Savior. The Father wants us to worship Him in Spirit and Truth. You need to check out the Truth part. I can only give you the truth. Whether you accept the truth or not (after a complete and thorough investigation) is between you and the Father. I wish all who read my post God's blesssings in the knowledge of Him. Also, when I typed my post, it was spaced and in color. When I pasted it unto CC, it came out without the spacing and color. Any assistance with that would be greatly appreciated.

If your theology has any ground to stand on, you should be able to give an answer for the things that I have said in response to your post.

You would also do well to read the scriptures that I have referenced in my above post.

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I really have nothing to say.

I have not read the whole thread, but can anyone tell me why this doctrine is important for their daily life with God ?
And, if possible, can this doctrine get you lost or saved if you get it wrong ?

I have my personnal stand on these questions, but reading some posts I had the feeling that this was a huge thing and I was concerned on what did it truly mean to you.

Why would any genuine Christian be "sad" that this is the truth? While we are not expected to comprehend this we are expected to believe it.

If this is in answer to my "concern", I would not say I am sad of the truth, I was just concerned by how intense this discussion gets. I wonder why is it so important to you.

Then read my post on the Trinity. To get the 'most benefit you have to read each scripture followed by my comment on that scripture and you need to go through all of it. According to Matt 11: 25-27, only the Son knows the one true God and those to whomsoever the Son will reveal Him to. My only purpose is to do the Father's will and expose that Jesus is our Lord, our God , and our Savior, and above all creation, but the Father is the one true God above all including Jesus.
1 Cor 15: 27 For He (the Father) hath put all things under His (the Son) feet. But when He saith all things are put under Him (the Son), it is manifest that He ( the Father) is EXCEPTED who did put all things under Him.
In John 14: 28 Jesus states that the Father is greater than Him.
John 6 : 38 For I ( Jesus the Christ) came down from heaven, not to do mine own will but the will of Him (the Father) that sent me.
There is so much more truths in my post.

Read my whole post and you will be blessed with the understanding the truth about the Father, Son , and the Father's Holy Spirit.

Sir, there is a lot that you don't understand. I'll just address your first Scripture : John 10: 30. If Oneness means being the same entity, why did Jesus pray to the Father that His disciples be One with the Father and Him? Being One with the Father and Son simply means receiving the Holy Spirit of the Father which functions as a power given by Him ( the Father) to those who are Baptized in His Name and become part of His Family. It is through His Holy Spirit that we are changed (born again) and perfected. We are changed in that the Father's Spirit dwells in us and gives us Love for God and all people, knowledge and inderstanding, direction, and the desire to know Him and do His will.

The Son is distinct from the Father in that the Father is a Spirit inhabiting eternity without flesh; while the Son is the incarnation of that Spirit. So, He is a distinct Person while He is also the same Person.

The Father, inhabiting eternity, exists throughout eternity before He ascended to take on an added nature of human flesh; thus subjecting Himself to time and space.

This is how the verses that you have quoted above can be reconciled with the concept that Jesus is in fact the Lord God.