To recap, Jesus is the heir of all things and has the authority to be the final revealer of His Father’s revelation. Jesus made the world and as Creator controls God’s plan and has the authority to reveal it. Jesus is the radiance of His glory or the visible manifestation of God. As, the visible manifestation of God dwelling among humanity, He reveals God and His word to humanity. Jesus is the exact representation of His nature or exact copy of God’s nature and has the right to speak as God and reveal His word. Jesus upholds all things by the word of His power. Because He spoke all creation into existence, He has the authority to speak God’s word to humanity.
The sixth qualification is that Jesus made purification of sins. The term purification (katharismós) is a priestly term associated with ceremonial cleansing from defilement by the death of a sacrifice. Jesus' sacrificial death for sin cleanses the sinner from all sin. The phrase had made (poiéō) is an aorist participle indicating that His sacrificial death was a one time action completed in the past, which accomplished purification for all time. Thus, His sacrificial death is a finished work. Because Jesus finished the work of humanity’s redemption, He has the right to finish the work of God's revelation to humanity.
Thus seventh qualification is that Jesus sat down at the right hand of the Majesty on high. Being seated indicates that His redemptive work is finished. Further, He is sitting at the right hand of God, which places Him in a position of equality to the Father. Since the Father is Lord, so Jesus is Lord. Because Jesus is Lord, He is qualified to be the final revealer of God’s revelation.