The miracle tells us that Jesus is full of power, and that through him,his glory and that of the Father is revealead.

Again,when jesus acts as requested,what he does is superb-more superior than the ordinary-in this case he blesses us beyond what we can imagine.

The miracle also tells us that Jesus would like to do things in their own time,in his timing but if requested,he is kind enough to oblige.

Again,since the owners of the feast would have been ashamed for not providing adequate wine for their gust,the miracle reminds me that even in my own hour of need,Jesus will come to my resque,and will not let me be ashamed.Thank you Jesus for always coming to our aid and saving our faces from shame! 

Jesus was so upset with the business transactions in the temple courts because the temple was supposed to be a house of prayer which was to be revered .it was also supposed to be a place where God's presence inhabited,and hence needed to be respected.

Moreover,the transactions being carried out there were dishonest,yet God hates dishonest measures,and in carrying dishonest business in God's premises,they were dishonouring and blasheming against God.