The Greek word “Christos” (G5547), translated as “Christ”, and the Hebrew word “Mashiyach” (H4899), translated as “Messiah” in English, both mean, “Anointed”.
Looking back in the Old Testament (Tanakh), we see there are two particular offices that are clearly anointed: the Priesthood and the Kingship.
The LORD (YHVH) makes covenants with two particular clans concerning these offices: the house of Levi for priesthood, and the house of David for kingship.
“Now this is what you shall do to them to consecrate them, that they may serve me as priests. Take one bull of the herd and two rams without blemish, and unleavened bread, unleavened cakes mixed with oil, and unleavened wafers smeared with oil. You shall make them of fine wheat flour. You shall put them in one basket and bring them in the basket, and bring the bull and the two rams. You shall bring Aaron and his sons to the entrance of the tent of meeting and wash them with water. Then you shall take the garments, and put on Aaron the coat and the robe of the ephod, and the ephod, and the breastpiece, and gird him with the skillfully woven band of the ephod. And you shall set the turban on his head and put the holy crown on the turban. You shall take the anointing oil and pour it on his head and anoint him. Then you shall bring his sons and put coats on them, and you shall gird Aaron and his sons with sashes and bind caps on them. And the priesthood shall be theirs by a statute forever. Thus you shall ordain Aaron and his sons. (Exodus 29:1-9 ESV)
Now, therefore, thus you shall say to my servant David, ‘Thus says the LORD of hosts, I took you from the pasture, from following the sheep, that you should be prince over my people Israel. And I have been with you wherever you went and have cut off all your enemies from before you. And I will make for you a great name, like the name of the great ones of the earth. And I will appoint a place for my people Israel and will plant them, so that they may dwell in their own place and be disturbed no more. And violent men shall afflict them no more, as formerly, from the time that I appointed judges over my people Israel. And I will give you rest from all your enemies. Moreover, the LORD declares to you that the LORD will make you a house. When your days are fulfilled and you lie down with your fathers, I will raise up your offspring after you, who shall come from your body, and I will establish his kingdom. He shall build a house for my name, and I will establish the throne of his kingdom forever. I will be to him a father, and he shall be to me a son. When he commits iniquity, I will discipline him with the rod of men, with the stripes of the sons of men, but my steadfast love will not depart from him, as I took it from Saul, whom I put away from before you. And your house and your kingdom shall be made sure forever before me. Your throne shall be established forever.‘” (2 Samuel 7:8-16 ESV)
These offices are clearly established to continue through the seed of man: through the line of Aaron for the priesthood and through the line of David for the kingship. YHVH specifically chose them, selected from among their brothers.
“For thus says the LORD: David shall never lack a man to sit on the throne of the house of Israel, and the Levitical priests shall never lack a man in my presence to offer burnt offerings, to burn grain offerings, and to make sacrifices forever.” (Jeremiah 33:17-18 ESV)
Lest anyone think these covenants have ended…
The word of the LORD came to Jeremiah: “Thus says the LORD: If you can break my covenant with the day and my covenant with the night, so that day and night will not come at their appointed time, then also my covenant with David my servant may be broken, so that he shall not have a son to reign on his throne, and my covenant with the Levitical priests my ministers. As the host of heaven cannot be numbered and the sands of the sea cannot be measured, so I will multiply the offspring of David my servant, and the Levitical priests who minister to me.”
The word of the LORD came to Jeremiah: “Have you not observed that these people are saying, ‘The LORD has rejected the two clans that he chose’? Thus they have despised my people so that they are no longer a nation in their sight. Thus says the LORD: If I have not established my covenant with day and night and the fixed order of heaven and earth, then I will reject the offspring of Jacob and David my servant and will not choose one of his offspring to rule over the offspring of Abraham, Isaac, and Jacob. For I will restore their fortunes and will have mercy on them.” (Jeremiah 33:19-26 ESV)
In the days of Jesus/Yeshua, there was an expectation for the fulfillment of the prophecy concerning the one who will sit on David’s throne. Everyone understood the one to rule over Israel would be a physical son of David. Nobody, who paid any attention to the Law and the Prophets, expected YHVH God to come in the flesh and sit on that throne.
I believe this is a huge reason why the Jews and Christians of today are at odds with one another concerning Jesus. One understands the Messiah to be a man, while the other depicts the Christ to be God.
If Jesus is to be “the Christ/Messiah” who was prophesied that would come and reign on his father David’s throne, then he must be of the physical lineage of David, and therefore must be a man.
And Jesus went on with his disciples to the villages of Caesarea Philippi. And on the way he asked his disciples, “Who do people say that I am?” And they told him, “John the Baptist; and others say, Elijah; and others, one of the prophets.” (Mark 8:27-28 ESV)
“John the Baptist”, “Elijah”, “one of the prophets” — these are all men.
And he asked them, “But who do you say that I am?” Peter answered him, “You are the Christ.” And he strictly charged them to tell no one about him. (Mark 8:29-30 ESV)
Being “the Christ” does not mean he is more than a man. It simply means he was the man anointed for the job.
And the angel said to her, “Do not be afraid, Mary, for you have found favor with God. And behold, you will conceive in your womb and bear a son, and you shall call his name Jesus. He will be great and will be called the Son of the Most High. And the Lord God will give to him the throne of his father David, and he will reign over the house of Jacob forever, and of his kingdom there will be no end.” (Luke 1:30-33 ESV)