(2 CORINTHIANS 3:17) Now the Lord is that Spirit: and where the Spirit of the Lord is, there is liberty.
Jesus never changed.
(HEBREWS 13:8) Jesus Christ the same yesterday, and today and forever
Thus, He always had the fulness of the Holy Spirit in Him.
(JOHN 3:34) For he whom God hath sent speaketh the words of God: for God giveth not the Spirit by measure unto him.
(COLOSSIANS 2:9) For in him dwelleth all the fulness of the Godhead bodily.
(COLOSSIANS 1:19) For it pleased the Father that in him should all fulness dwell;
(JOHN 3:35) The Father loveth the Son, and hath given all things into his hand.
The Father is the supernatural Spirit of God, because God is a Spirit (John 4 :24)
In order to be seen in heaven, God had to create a Spirit-body for Himself. God also has human attributes, because man was made in the image of God.
So, the supernatural God wanted to live in a human Body as man was his highest form of creation. But the only human being that God could live in and express himself through, was the humanity of the Man Jesus.
(I PETER 1:10) Of which salvation the prophets have enquired and searched diligently, who prophesied of the grace that should come unto you:
Searching what, or what manner of time the Spirit of Christ, which was in them did signify, when it testified beforehand the sufferings of Christ, and the glory that should follow.
Each prophet had a portion of God’s Spirit which enabled him to express some aspect of Christ’s ministry. Moses, David, and Joseph had lives which pre-viewed Jesus’ birth, his anointing as King and His death, etc.
So, in the Old Testament, God could live out part of his Life through each of the prophets.
Ezekiel saw a vision of God Who had created a Spirit Body for Himself so that He could be seen by the angels in Heaven. This body looked just like a man.
(EZEKIEL 1:26) And above the firmament that was over their heads was the likeness of a throne, as the appearance of a sapphire stone: and upon the likeness of the throne was the likeness as the appearance of a man above upon it.
The Invisible Spirit of God the Father was trying to express his humanity by dwelling in this human-like Spirit Body called a Theophany (which we describe as the Son of God), that was visible to spiritual beings like angels in heaven.
The Son is the body that the invisible supernatural Father dwells in.
In the Old Testament God was mostly an Invisible Spirit called Jehovah. But hidden away in that Spirit were our human characteristics, especially the humanity of Jesus.
Then in the New Testament, the invisible God was veiled in the Man Jesus. God veiled inside a Man.
Now God allocates a certain measure of his Spirit to each born again Christian. That way God is building up a spiritual church over 2000 years of history whereby he dwells in everyone to make him or her a lively stone in is church. That way God has lived in Christians and displayed his power to overcome all the different problems and situations that the Devil has thrown against the Christians over the seven church ages.
This is God living out His characteristics in the lives of his people.
God bless!