Joh 2:11-13  This, the first of his signs, Jesus did at Cana in Galilee, and manifested his glory. And his disciples believed in him. After this he went down to Capernaum, with his mother and his brothers and his disciples, and they stayed there for a few days. The Passover of the Jews was at hand, and Jesus went up to Jerusalem." 

Jesus began demonstrating His power and glory. His glory as the only begotten of the Father-"full of grace and truth". He was fully man. Born of woman. He had brothers and sisters born through His mother Mary. Mary was a normal human female. Yet Jesus was fully God- "very God of very God".  His mission was to be accomplished within the miracle of Passover, in Jerusalem. He focused His path there.

Where else would He go but to the place where people were to learn about God. The Temple and the sacrificial system were to point the people to their need for Him to come. Their need to be made right with The Father. 

It angered Him greatly to see them using the temple to advance greed and promote evil against one another. The focus was on earthly gain not on coming into the presence of God. He would demonstrate forcefully the disdain and wrath of God. 
He would be hated by men for interfering in their lives. This is the view of evil and sin, God is an interference. They want Him to leave them alone. Everyone will get what they ask for from God! 

Joh 2:14 - 17  "In the temple he found those who were selling oxen and sheep and pigeons, and the money-changers sitting there. And making a whip of cords, he drove them all out of the temple, with the sheep and oxen. And he poured out the coins of the money-changers and overturned their tables. And he told those who sold the pigeons, "Take these things away; do not make my Father's house a house of trade." His disciples remembered that it was written, "Zeal for your house will consume me." 

So they say; "what will tell us that you have the authority to interfere"? 

Jesus referred them to the sign. He was the Temple replacement. He was the way to God, the way to find forgiveness and peace. His life, death and resurrection would be the sign they would see and have to come to grips with. 
He would be the fulfillment of the Law and the Prophets. He was The Word of God! He was Yahweh. 

Joh 2:18 - 22  "So the Jews said to him, "What sign do you show us for doing these things?" Jesus answered them, "Destroy this temple, and in three days I will raise it up." The Jews then said, "It has taken forty-six years to build this temple, and will you raise it up in three days?"  But he was speaking about the temple of his body. When therefore he was raised from the dead, his disciples remembered that he had said this, and they believed the Scripture and the word that Jesus had spoken." 


Luk 11:29 -36  "When the crowds were increasing, he began to say, "This generation is an evil generation. It seeks for a sign, but no sign will be given to it except the sign of Jonah.  For as Jonah became a sign to the people of Nineveh, so will the Son of Man be to this generation.  The queen of the South will rise up at the judgment with the men of this generation and condemn them, for she came from the ends of the earth to hear the wisdom of Solomon, and behold, something greater than Solomon is here.  The men of Nineveh will rise up at the judgment with this generation and condemn it, for they repented at the preaching of Jonah, and behold, something greater than Jonah is here.  "No one after lighting a lamp puts it in a cellar or under a basket, but on a stand, so that those who enter may see the light. Your eye is the lamp of your body. When your eye is healthy, your whole body is full of light, but when it is bad, your body is full of darkness. Therefore be careful lest the light in you be darkness. If then your whole body is full of light, having no part dark, it will be wholly bright, as when a lamp with its rays gives you light." 

He was showing lots of signs of His deity, power and glory. He was almighty God. He was Absolute Love. He demonstrated Love is not haughty or proud. Love is humble and gentle, but powerful and controlled. Many believed it was clear to see if you wanted to see. 
Yet, Absolute Love knows to only entrust itself to purity and the object of eternal loyal love. Jesus would not entrust Himself to anyone but His Father, God!
He is the creator of all men's hearts and knows they only are trustworthy through His gift of "New Birth". 

Joh 2:23 - 3:1 "Now when he was in Jerusalem at the Passover Feast, many believed in his name when they saw the signs that he was doing.  But Jesus on his part did not entrust himself to them, because he knew all people and needed no one to bear witness about man, for he himself knew what was in man.  Now there was a man of the Pharisees named Nicodemus, a ruler of the Jews.