With God All Things Are Possible

Father Peter discusses the question, what is critical for our salvation? Christ tells the rich lawyer who has fulfilled all the obligations of the law externally to go and sell his possessions: which fills the man's heart with sorrow, such was his passion for his riches.  

Why does Christ make such a dramatic statement -
​"it is easier for a camel to go through the eye of a needle than for a rich man to enter the kingdom of God?"