Scripture proclaims: The Father, Son & Holy Spirit are all God.
Jesus is God: Isa 7:14 & 9:6, Micah 5:2, Matt 1:23, Jn 1:1 & 20:28, 1 Tim 3:16 Titus 2:13 Rom 9:5 Rev 1:8.
Holy Spirit (alway's capitalized showing deity) is God: Ps 139:7-8, Acts 5:3-4 & 13:2, Eph 4:30, 1 Cor 2:10-11, 12:4-7, 2 Cor 3:16 & 13:14
Deut 6:4 Hear, O Israel: The LORD our God is one LORD:
(NOTE: The Hebrew word Echad translates One. However, echad/one, means UNITY not SINGULARITY. Another example of echad: Gen 2:24 echad speaks about the husband & wife being ONE flesh. Husband & wife aren't a singular being. They are in unity with each other.)
The Son begins in his Godly form, seperates/divest himself to become man & servent. Although now physically in human form (void of his heavenly shekinah glory/form) he still posesses his spiritual essense/nature. Witnessed via the numerous miricals he preformed & on the Mt of transfiguration (Mat 17:1–8, Mk 9:2–8, Lk 9:28–36) when his earthly form/essense/nature is changed into visible glory.
Phil 2:6 a very misinterpreted verse:
Thayer
2470 ísos – equality; having the same (similar) level or value; equivalent, equal in substance or quality
Vine's Expository Dictionary of New Testament Words
Philippians 2:6; the word is in the neuter plural, lit., "equalities;" "in the RV the words are translated 'on an equality with God,' instead of 'equal with God,
Strongs
https://studybible.info/TR-KJV_Strongs-ERV/Philippians 2:6. ER Version (i) 6 who, being in the form of God, counted it not a prize to be on an equality with God,
AMP Phil 2:6 who, although He existed in the form and unchanging essence of God [as One with Him, possessing the fullness of all the divine attributes—the entire nature of deity], did not regard equality with God a thing to be grasped or asserted [as if He did not already possess it, or was afraid of losing it];
English Revised Version Phil 2:6 who, being in the form of God, counted it not a prize to be on an equality with God,
Darby Phil 2:6 who, subsisting in the form of God, did not esteem it an object of rapine to be on an equality with God;
NASB Phil 2:6 who, although He existed in the form of God, did not regard equality with God a thing to be grasped,
NIV Phil 2:6 Who, being in very nature[a] God, did not consider equality with God something to be used to his own advantage;
Jn 17:5 O Father, glorify thou me with thine own self with the glory which I had with thee before the world was.
(NOTE: Before the world began, the Son, enjoyed glory "WITH" the Father. "NOT AS" the Father)
Spiritual oneness:
Jn 10:30 I and my Father are one.
(NOTE: Spiritually one)
Jn 10:38 But if I do, though ye believe not me, believe the works: that ye may know, and believe, that the Father is in me, and I in him.
(NOTE: Spiritual oneness)
Jn 14:10 Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works.
(NOTE: Spiritual oneness)
Jn 14:11 Believe me that I am in the Father, and the Father in me: or else believe me for the very works' sake.
(NOTE: Spiritual oneness)
Jn 14:20 At that day ye shall know that I am in my Father, and ye in me, and I in you.
(NOTE: Spiritual oneness, here, includes Father, Son & all believers indwelt with the Holy Spirit)
Jn 17:21 That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me.
(NOTE: Spiritual oneness, here, includes Father, Son & all believers indwelt with the Holy Spirit)
Rom 12:5 So we, being many, are one body in Christ, and every one members one of another.
(NOTE: Does one body here = one person? NO! The millions/billions etc = One Spiritual Body)
Eph 5:23 For the husband is the head of the wife, even as Christ is the head of the church: and he is the saviour of the body.
(NOTE: Christ is the head of the church: He is the saviour of a large/numerous "Spiritual body of one")
1 Cor 11:3 But I would have you know, that the head of every man is Christ; and the head of the woman is the man; and the head of Christ is God.
(NOTE: The HEAD of Christ, is God the Father)
Father is a TITLE, the Son was sent by his Father (Jn 3:16). The Son is our creator Jn 1:3 & 10, Col 1:16 & 17, 1 Cor 8:6 therefore he's our Father. Rev 19:13 Christ is called the Word, Jn 1:1 the Word was with God & the Word was God.s
The Son is the agent by whom the Father works within our universe & preserves all things in this realm. After creation the Son rested from creative works. After the finished the work of redemption (Jn 19:30) the Son goes to Heaven (Beyond our realm) & sits down next at the right hand of the Father, NOT next to himself).
The Son, sent by the Father (Jn 3:16) is PREEMINENT in ALL things within our realm:
Creation (listed above), Redemption (Jn 19:30), Resurrection (1 Cor 15:20-28), Mediation (1 Tim 2:5) & Judgement (Jn 5:22).