Jesus told people can become sons of God by this:
But as many as received him, to them he gave the right to become God's children, to those who believe in his name: who were born not of blood, nor of the will of the flesh, nor of the will of man, but of God.
John 1:12-13
It is the spirit who gives life. The flesh profits nothing. The words that I speak to you are spirit, and are life.
John 6:63
Jesus was born 'Son of God' not by blood, nor by the will of the flesh, nor by the will of man, but by the spirit of the Lord that descended upon him on the day he was baptised and the heavenly voice was heard to say, "You are my son, this day I have begotten thee, or as said in Hebrews 5: 5; "You are my son, today I have become your Father."
The Son of Man, the most high in the creation, Our Lord God and savior, the God of Abraham, Isaac, and Jacob said to Moses in Deuteronomy 18: 18-19; “I will send them a prophet just like you from among their own people; I will put
MY WORDS in his mouth, and he will tell the people everything that I command him to say. And whoever will not give heed to
MY WORDS which he will speak in
MY NAME, I will surely punish.”
Peter confirms that Jesus was that man, when, concerning the man Jesus, he says in. Acts 3: 22; For Moses said; "The Lord your God will send you a prophet, just as he sent me, and he will be one of your own people, etc."
Did the people of his day believe that he was the Lord, the God of Abraham, Isaac, and Jacob. The God of our ancestors? No, they did not, for on the day of his triumphant entry into Jerusalem, the people escorting him cried out,
"Blessed is he, who comes in the name of the Lord." Verifying that they believed Jesus to be the one that God had promised that he would choose from among the Israelites, and send to the people to speak in his name.