Therefore, since we have a great high priest who has gone through the heavens, Jesus the Son of God, let us hold firmly to the faith we profess. For we do not have a high priest who is unable to sympathize with our weaknesses, but we have one who has been tempted in every way, just as we are—yet was without sin.

Christ as Priest

It is easy to look upon pastors as being disconnected from the world.  Most are not working in the everyday world but instead spend all day in a sort of church bubble.  While it would be unfair to say that pastors do not understand the temptations that Christians face in the "real world" the perception is certainly present in many churches.

Jesus lived His life in the real world.  He spent much of his time with tax collectors, prostitutes, and other sinners.  In the process He was tempted in every way imaginable but still did not fall victim to that temptation.

Jesus is able to sympathize with our weaknesses because He has walked in our shoes.  It is for this reason that He makes the perfect high priest.  He does not expect anything from us that we are incapable of doing. 

Jesus knows what is best for us because He has been here with us.  While it is hard to live the Christian life at times, we should remember that Jesus does not ask anything from us that He didn't already do.  Of course we will fail at times because we are sinful.  But this is where Jesus as high priest comes in again.  Jesus is at the right hand of the Father asking for our forgiveness because He knows how hard it is to live our life.