Servant Songs: Scriptural Appropriation?

We look at the four famous "Servant Songs" from Isaiah.  We also consider Sister Marie, who was one of my boyhood teachers - and what she told me about the use of Jewish scripture and our relationship to the Jewish people.  As it turns out, there is strong disagreement between Christians and Jews as to what these "Servant Songs" mean.  This leads us to the much bigger question of how to interpret the Bible as a whole.