“Now, Father, glorify Me together with Yourself, [para seautōo] with the glory which I had [eichon] with You [para soi] before the world was” (emphasis added). John 17:5
Christ was sent by the Father.
John 3
13 And no man hath ascended up to heaven, but he that came down from heaven, even the Son of man which is in heaven.
John 3
16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
John 6
33 For the bread of God is he which cometh down from heaven, and giveth life unto the world.
Revelation 1 : 17-18 — The one God who was the first and the last died and rose again!
7. Hebrews 1 : 1, 2, 8 — God the Father calls the Son, "God."
8. Acts 5 : 3-4 --Peter calls the Holy Spirit, "God."
9. John 6 : 27 --Jesus calls the Father, "God."
Triune God
Each person is a self-aware subject who relates to each of the other two as "another."
All Persons of the Godhead are fully God.
Hebrews 1 : 1, 2, 8 — God the Father calls the Son, "God."
8. Acts 5 : 3-4 --Peter calls the Holy Spirit, "God."
9. John 6 : 27 --Jesus calls the Father, "God."
All three were manifested at the same time at the Son's baptism.
The Father, the Son, and the Holy Spirit are able to:
(A) Send or be sent by one another (John 3:17, 10:36, 14:23-26, 15:26, 16:7).
(B) Speak to each other (John 17:1-26, Romans 8:26-27, Hebrews 1:7-8) and about each other (Matthew 17:5, Mark 1:11, John 8:13-18).
(C) The Father and Son love and honor each other (John 3:35, 5:20, 14:31).
The Trinity doctrine -- that there is one God in three Persons -- summarizes these biblical truths without adding or subtracting anything from them.
Above information gleaned from internet sources.