Isa 22:20 And it shall come to pass in that day, that I will call my servant Eliakim the son of Hilkiah:
Isa 36:3 Then came forth unto him Eliakim, Hilkiah's son, which was over the house, and Shebna the scribe, and Joah, Asaph's son, the recorder.
Both Shebna and Eliakim were servants of Hezekiah, but Shebna's heart was directed towards selfish ambition and glory, and Eliakim's heart was turned towards the LORD.
Isa 22:21 And I will clothe him with thy robe, and strengthen him with thy girdle, and I will commit thy government into his hand: and he shall be a father to the inhabitants of Jerusalem, and to the house of Judah.
Shebna is unfaithful, the LORD will remove him from his office, strip him of his authority, and give it to Eliakim.
Isa 22:22 And the key of the house of David will I lay upon his shoulder; so he shall open, and none shall shut; and he shall shut, and none shall open.
The righteous Eliakim as the steward of the house of David, was a type of Jesus, as spoken in Revelation 3:7.
Rev 3:7 And to the angel of the church in Philadelphia write; These things saith he that is holy, he that is true, he that hath the key of David, he that openeth, and no man shutteth; and shutteth, and no man openeth;
Rev 3:8 I know thy works: behold, I have set before thee an open door, and no man can shut it: for thou hast a little strength, and hast kept my word, and hast not denied my name.
A key represents authority. Authority was given to Peter and the apostles and to those who Jesus chooses to have authority. We must be a faithful servant to be given his authority. His authority is his presence.
Mat 16:16 And Simon Peter answered and said, Thou art the Christ, the Son of the living God.
Mat 16:17 And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven.
Mat 16:18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.
Mat 16:19 And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.
Eliakim as the steward of the house of David, was given the authority and responsibility delegated to the name of King David.
Authority is power. Jesus shared authority and power, in his name, with his disciples.
Mat 28:18 And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth.
Mat 28:19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost:
Mat 28:20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen.
Luke 24:47 And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.
Luke 24:48 And ye are witnesses of these things.
Luke 24:49 And, behold, I send the promise of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high.
Jesus gave the Holy Spirit to his born again disciples, with power and authority to accomplish his work. If we have no power, we are operating in the flesh, in our own power. We are to submit all to God, to be used of him. Not to manipulate or pretend to be what we are not. Eliakim had proven himself by faithfulness to the most high God.