The Evangelical Christians that you speak of have no care or concern for the Jewish people in the State of Israel or for that fact anywhere in the world. They are renowned for their vibrant preaching and converting in an attempt to curb the world into a Christian state in entirity. They abuse natural disasters such as the Boxing Day Tsunami as a means to bring missionaries whom attempt to convert Muslim nations such as Band Aceh. They're motives for supporting Israel come from the fact they fear the wrath that will ensue if Israel is overwhelmed and, in their view, the end of the World. You have been misslead.
UN: Gaza could be 'uninhabitable' by 2020 if trends continue (AP)
from the article: Pope, Orthodox leader to work for Middle East peace