Mar 12:28 And one of the scribes came, and having heard them reasoning together, and perceiving that he had answered them well, asked him, Which is the first commandment of all?
Mar 12:29 And Jesus answered him, The first of all the commandments is, Hear, O Israel; The Lord our God is one Lord:
Mar 12:30 And thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind, and with all thy strength: this is the first commandment.
Mar 12:31 And the second is like, namely this, Thou shalt love thy neighbour as thyself. There is none other commandment greater than these.
Mar 12:32 And the scribe said unto him, Well, Master, thou hast said the truth: for there is one God; and there is none other but he:
Mar 12:33 And to love him with all the heart, and with all the understanding, and with all the soul, and with all the strength, and to love his neighbour as himself, is more than all whole burnt offerings and sacrifices.
Mar 12:34 And when Jesus saw that he answered discreetly, he said unto him, Thou art not far from the kingdom of God. And no man after that durst ask him any question.
Mar 12:35 And Jesus answered and said, while he taught in the temple, How say the scribes that Christ is the Son of David?
Mar 12:36 For David himself said by the Holy Ghost, The LORD said to my Lord, Sit thou on my right hand, till I make thine enemies thy footstool.
Mar 12:37 David therefore himself calleth him Lord; and whence is he then his son? And the common people heard him gladly.
There is one God and he has a Son. Jesus was trying to show the people this truth. The son of David, the son of man is also the Son of God from heaven. The scribe did not yet see that Jesus was the Son of God. Jesus responded that he was not far from the kingdom of God. Jesus is the king of the kingdom. A lot of religious people say that God is one and do not see Jesus as his son. God the father and Jesus his son are one. They are one God, they do not act separately. They are one in one accord. Jesus wants us to be in one accord as well. To be born again of His Spirit is the start and to be conformed to the image of Jesus, obeying him and loving God and one another will make us one church in unity. Peter was given a revelation of Jesus being the Son of God.
Mat 16:15 He saith unto them, But whom say ye that I am?
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.
God is a spirit and spirits know the spirits. The Spirit of God is greatest of all.
Luk 4:33 And in the synagogue there was a man, which had a spirit of an unclean devil, and cried out with a loud voice,
Luk 4:34 Saying, Let us alone; what have we to do with thee, thou Jesus of Nazareth? art thou come to destroy us? I know thee who thou art; the Holy One of God.
Luk 4:35 And Jesus rebuked him, saying, Hold thy peace, and come out of him. And when the devil had thrown him in the midst, he came out of him, and hurt him not.
Luk 4:36 And they were all amazed, and spake among themselves, saying, What a word is this! for with authority and power he commandeth the unclean spirits, and they come out.
Jesus as a man was tested to prove that he was the Son of God.
Luk 4:3 And the devil said unto him, If thou be the Son of God, command this stone that it be made bread.
Luk 4:4 And Jesus answered him, saying, It is written, That man shall not live by bread alone, but by every word of God.
He passed the testing of the devil and overcame him on the cross by shedding his righteous blood to pay the price of our redemption. His blood washes away our sins when we believe in him as the Son of God who came to seek and to save the lost. Jesus, the son of man, the Son of the Living God is the Christ, the Messiah, our Savior.