3. If Jesus is God, then where is Jesus “human soul/spirit”?
If Jesus is God
First, the Bible does not make this assumption or statement; it states that Jesus is the “Son of God” and “Son of Man” and that his Father is God, of course, to be a son there must be a Father (Father and Son – The Relationship Between Jesus And God).
Second, we never want to lose focus of several fundamental facts:
1.) There is only one God; there is not an assembly of multiple gods that form a godhead unit (Deuteronomy 4:35, 4:39, 6:4; Isaiah 43:10, 44:6, 45:5-6, 18, 22; Ephesians 4:6)
Now to answer this specific question:
Jesus is in Heaven at the “Right Hand” of God
Most scriptures reflect Jesus as standing or sitting down at the right hand of God. It is irrelevant whether you claim the “right hand” of God is stated as being figurative or literal, either way, it denotes Jesus in a position to someone other than himself. (Acts 7:55-56; Romans 8:34; Ephesians 1:20; Colossians 3:1; Hebrews 1:3, Hebrews 8:1, Hebrews 10:12, Hebrews 12:2; 1 Peter 3:22).
(Hebrews 4:14) “Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.”
(Hebrews 9:24) “For Christ is not entered into the holy places made with hands, which are the figures of the true; but into heaven itself, now to appear in the presence of God for us:”
(Romans 8:34) “Who is he that condemneth? It is Christ that died, yea rather, that is risen again, who is even at the right hand of God, who also maketh intercession for us.”
(Hebrews 7:25) “Wherefore he is able also to save them to the uttermost that come unto God by him, seeing he ever liveth to make intercession for them.”
(Revelation 20:6) “Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him[Christ] a thousand years.”
(Revelation 5:4-7) “And I wept much, because no man was found worthy to open and to read the book, neither to look thereon. 5 And one of the elders saith unto me, Weep not: behold, the Lion of the tribe of Juda, the Root of David, hath prevailed to open the book, and to loose the seven seals thereof. 6 And I beheld, and, lo, in the midst of the throne and of the four beasts, and in the midst of the elders, stood a Lamb as it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent forth into all the earth. 7 And he [Jesus] came and took the book out of the right hand of him [God] that sat upon the throne.”
(1 Corinthians 15:24-28 (NLT)) “After that the end will come, when he will turn the Kingdom over to God the Father, having destroyed every ruler and authority and power. 25 For Christ must reign until he humbles all his enemies beneath his feet. 26 And the last enemy to be destroyed is death. 27 For the Scriptures say, “God has put all things under his authority.” (Of course, when it says “all things are under his authority,” that does not include God himself, who gave Christ his authority.) 28 Then, when all things are under his authority, the Son will put himself under God’s authority, so that God, who gave his Son authority over all things, will be utterly supreme over everything everywhere.”