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Actually he is sitting at the right hand until his enemies are made his footstool.
The right hand is a symbol of power used throughout the Old Testament.

Psalms 110:1 A Psalm of David. The LORD said unto my Lord, Sit thou at my right hand, until I make thine enemies thy footstool.
:2 The LORD shall send the rod of thy strength out of Zion: rule thou in the midst of thine enemies.
:3 Thy people shall be willing in the day of thy power, in the beauties of holiness from the womb of the morning: thou hast the dew of thy youth.
:4 The LORD hath sworn, and will not repent, Thou art a priest for ever after the order of Melchizedek.
:5 The Lord at thy right hand shall strike through kings in the day of his wrath.
:6 He shall judge among the heathen, he shall fill the places with the dead bodies; he shall wound the heads over many countries.
:7 He shall drink of the brook in the way: therefore shall he lift up the head.
:1 Now of the things which we have spoken this is the sum: We have such an high priest, who is set on the right hand of the throne of the Majesty in the heavens;
:2 A minister of the sanctuary, and of the true tabernacle, which the Lord pitched, and not man.

YHVH is one (echad)
He came in the flesh
It is His omnipresence which man cannot comprehend

John 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
:2 The same was in the beginning with God.
:3 All things were made by him; and without him was not any thing made that was made.
:4 In him was life; and the life was the light of men.
:5 And the light shineth in darkness; and the darkness comprehended it not.
:6 There was a man sent from God, whose name was John.
:7 The same came for a witness, to bear witness of the Light, that all men through him might believe.
:8 He was not that Light, but was sent to bear witness of that Light.
:9 That was the true Light, which lighteth every man that cometh into the world.
:10 He was in the world, and the world was made by him, and the world knew him not.
:11 He came unto his own, and his own received him not.
:12 But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name:
:13 Which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.
: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.

Mathew 11:27 All things are delivered unto me of my Father: and no man knoweth the Son, but the Father; neither knoweth any man the Father, save the Son, and he to whomsoever the Son will reveal him.

Zechariah 13:6 And one shall say unto him, What are these wounds in thine hands? Then he shall answer, Those with which I was wounded in the house of my friends.