Hebrews 1:3 KJV He … sat down on the right hand of the Majesty on high…
Hebrews 1:3 NASB He … sat down at the right hand of the Majesty on high …
Allow your imagination a bit of liberty! Imagine a man walking into the throne room of Heaven and, without hesitation or apology, walking up and seating Himself on the right hand of God. No invitation is needed (I realize the other side of this in Heb 1:13). No voice of challenge is raised; no protest is hurled against the intruder. There are no questions asked and no credentials which need to be displayed. He is simply claiming what is His.

This is something of the force of what Hebrews 1:3 displays. It would be better and more accurate to read the verse, “He sat Himself down at the right hand of the Majesty on high.” At the highest point of the universe, the pinnacle of glory, the ultimate majesty of all majesties, He walked into the throne room and sat down! All created intelligences in heaven must have gazed with wonder as, for the first time, a real Man not only approached the throne but claimed the throne, seating Himself at the right hand of the Majesty on high! Perhaps, the angelic throng who, only forty days earlier, had watched in amazement as the Lord Jesus was impaled to a tree now began to understand something of the “manifold wisdom of God” as He took His place at God’s right hand.
Consider:
1. Look at the four times we read of the Lord Jesus sitting at the right hand of God (Ch 1:3; 8:1; 10:12; 12:2) and try to link different aspects of truth with each.
2. Hebrews 1:13 says that the Father said to the Son, “Sit Thou …” How does this balance the idea that He sat Himself down? What does each expression convey about the finality of His work?
3. In Psalm 16:11, we read of God’s right hand. Link it with our verse.

This links well with “He made Himself lower that the angels”. The fact that he made these choices proves who He is. If he were not God incarnate, He would have had no ability to control these aspects of what He did. The very right He had to sit down without any hesitation, shows His deity, authority and power.
Isaiah 46:9 reminds us “I am God: there is none like me.” In John10 the Lord states” I and my Father are one.” The wonder of that will be revealed further when we are with Him in eternity where the books will be opened to us.