This is an excellent question. I, by no means, have all knowledge, but here is a little of what I have gleaned from my relationship with The Lord.
God is represented by three things, the Father, the Son, and the Holy Spirit. They are all one. We are created in the image of God, and that mirror image is our soul, flesh and spirit. We are obviously one person, just as the Godhead is one, but we have three distinct branches of who we are.. Our flesh has to be crucified, just as God's flesh was crucified for our sins. Our flesh, which is represented by Jesus, MUST take the backseat to our soul by which our born again spirit gives life.
Yeah, still a little confusing for me, the aspects of the soul and spirit specifically, but in a nutshell, we are inter dimensional creatures. Just as Jesus (the flesh) said that the Father was greater than he, so too is our soul and spirit greater than our flesh.
Quoting: Mix 1430445 
Great answer! In the Book of Revelation it says no one is worthy to open the book of 7 seals except for the lamb of God - Jesus. Why is he worthy? Because he had to live as a man and be subject to every temptation we are, feel hunger, pain etc. and yet overcome sin all the days of his 33 years. God the Father is a spirit, where as Jesus is 100% God but also 100% man. It isn't the easiest thing for us to understand, it is complex even as we are. We are God's tabernacle - outer court (body), inner court (mind/ emotions/ personality) and holy of holies (the breath of life, God's holy spirit in us).
1 Thess 5:23 (KJV) - 23 And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ. See the 3 in 1?
1 John 5:7 For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one.
John 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
John 1:14 And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth. God is also three in one, and we are made in his image, halleluyah.
Jesus could open the scroll because He is High Priest to mankind and the King of Kings. The first seal is God and the Holy Spirit and Christ is the method used in those final prophecies. His 7 pairs of eyes is the 7 appearances He makes in Revelation. This is also a reference to Him in relation to the 1st seal vision.
Isa:49:2:
And he hath made my mouth like a sharp sword;
in the shadow of his hand hath he hid me,
and made me a polished shaft;
in his quiver hath he hid me;
Man is two parts rather than 3. Even husband and wife are shown to be a model after God and the Holy Spirit.
Ge:1:26:
And God said,
Let us make man in our image,
after our likeness:
and let them have dominion over the fish of the sea,
and over the fowl of the air,
and over the cattle,
and over all the earth,
and over every creeping thing that creepeth upon the earth.
Ge:1:27:
So God created man in his own image,
in the image of God created he him;
male and female created he them.
Ge:2:7:
And the LORD God formed man of the dust of the ground,
and breathed into his nostrils the breath of life;
and man became a living soul.
Ec:3:20:
All go unto one place;
all are of the dust,
and all turn to dust again.
Ec:12:7:
Then shall the dust return to the earth as it was:
and the spirit shall return unto God who gave it.
