Though we humans (created in God's image) have body, soul and spirit we are not each "three separate persons". Though God manifested Himself as "Father, Son, and Holy Ghost" he is not "three separate persons".
1) God is a Spirit.
John 4:24 God [is] a Spirit: and they that worship him must worship [him] in spirit and in truth.
2) God is holy.
I Samuel 2:2 [There is] none holy as the LORD: for [there is] none beside thee: neither [is there] any rock like our God.
3) God is a "Holy Spirit".
4) Jesus is the "Spirit of truth"
John 14:6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
5) Jesus was "dwelling with them" and promised to be "in them".
John 14:17 [Even] the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you.
6) The "comforter" is the "Spirit of Christ"
John 14:18 I will not leave you comfortless: I will come to you.
7) The "Spirit of Christ" is the "Holy Spirit" is the "Spirit of Truth"
John 14:26 But the Comforter, [which is] the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.
8) The Spirit of God visited His creation robed in flesh as the "Son".
I Timothy 3:16 And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
9) The fullness of God is in Jesus Christ
Colossians 2:9 For in him dwelleth all the fulness of the Godhead bodily. Colossians 2:10 And ye are complete in him, which is the head of all principality and power:
10) Jesus IS the "everlasting Father".
Isaiah 9:6 For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace.
11) Those who believe that Jesus is a "separate person" from the "Father" don't really know Jesus at all.
John 14:9 Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou [then], Shew us the Father?
Rev. Steve Winter