Isa 11:1 There shall come forth a shoot from the stump of Jesse, and a branch from his roots shall bear fruit. Isa 11:10 In that day the root of Jesse, who shall stand as a signal for the peoples—of him shall the nations inquire, and his resting place shall be glorious.
Rev 22:16 “I, Jesus, have sent my angel to testify to you about these things for the churches. I am the root and the descendant of David, the bright morning star."
There are many ways the divinity of Jesus and his eternal nature are taught in Scripture. Some are rather obvious as the prologue of the Gospel of John and others are mentioned in an almost matter of fact way couched in a metaphor as in the above verses. What I like about these verses is that it shows the unity of the Old and New Testaments as they teach the divinity of Jesus.
In Isa. 11:1 Isaiah prophesies that the Messiah shall shoot forth as a branch from the dead stump of Jesse. After the Babylonian captivity the kingly line all but disappeared from the world stage. The Monarchy was for all appearances dead. But when Jesus came to earth born of the line of Jesse, the stump all of the sudden is alive again. In this case Jesse was the root from which Jesus sprung forth as Isa. 11:1 states as well as Rev 5:5 And one of the elders said to me, "Weep no more; behold, the Lion of the tribe of Judah, the Root of David, has conquered, so that he can open the scroll and its seven seals." In Revelation David is the root or progenitor of Jesus’ humanity.
But in Isa. 11:10 the Messiah is all of the sudden referred to as the root of Jesse! So who is coming from whom? Isaiah didn’t make a typo nor was he confused because Jesus as the eternal Son of God is the source of all life and yet in the incarnation he was born of the virgin Mary of the lineage of David.
But just to seal the deal Jesus at the very end of the Bible brings this all together in Rev. 22:16 above where he states plainly that he is at the same time the root of David and yet a descendant of David; he is the root and the shoot! He isn’t just saying that he existed before Jesse and David which could be taken to mean at some point he came into existence before they did. By saying that he is the root he is claiming that Jesse and David came from him thereby claiming to be the God of creation. If that wasn’t enough back in vs. 13 he says it another way, Rev 22:13 I am the Alpha and the Omega, the first and the last, the beginning and the end." He couldn’t have come into existence because nothing was before him.
No wonder all creation gives him the worship reserved for God alone in Rev. 5; Rev 5:12 saying with a loud voice, "Worthy is the Lamb who was slain, to receive power and wealth and wisdom and might and honor and glory and blessing!" Rev 5:13 And I heard every creature in heaven and on earth and under the earth and in the sea, and all that is in them, saying, "To him who sits on the throne and to the Lamb be blessing and honor and glory and might forever and ever!" Rev 5:14 And the four living creatures said, "Amen!" and the elders fell down and worshiped.