Verse: Mark 11:1-33

Here we see Jesus fulfill Zechariah's prophesy. He comes into Jerusalem as a peaceable king, not as a warring conquerer. This crowd welcomes Jesus into their city, but later chant "Crucify Him".
The we see Jesus clear the temple again, saying "Is it not written:
'My house will be called a house of prayer for all nations'? But you have made it 'a den of robbers.'"
This angers the cheif priests of the temple, who no doubt profited from the sales going on in their temple. But because of His popularity, they needed to find a way to kill Jesus without angering the crowd. Little did they know, His death would lead to a new religion, one that was not based on the 'laws' that the Pharisees loved to follow.
Jesus now displays the awesome power of Jesus. His words "...I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." show us that as long as we believe in our prayers, and do not doubt that we will recieve what we ask for, we shall receive it. Prayer is an awesome thing, something that we do probably do not use enough in everyday life.
Jesus points out the lack of faith in John the Baptists work. The Leaders ask who gave Jesus authority to do His works. Jesus retorts with "I will ask you one question. Answer me, and I will tell you by what authority I am doing these things. John's baptism--was it from heaven, or from men? Tell me!" The leaders do not know, and are scared of either answer. Jesus replies by saying that He will not tell them who he works for. Jesus says this because they would not believe Him, but instead use His words against Him, calling Him a traitor. Jesus was not a traitor, but they were not interested in the truth, only saving their positions of power.