" Intelligent design" is a theory of the origins of life that suggests that intelligent causes best explain the origin of living systems and their features. The theory is based on the empirically-testable assumption that systems which exhibit high-information content are more likely the result of an intelligent design rather than undirected natural causes. Simply put in lay terms, living things are too complex to have happened by chance and there was likely some intelligent cause involved in their origins.<quoted text>
You are correct there are many scientists that are members of various Christian churches and other organizations that understand that science cannot be based on religious beliefs and must be based on real world, empirical evidence.
it [evolution] makes no assertions about any realm of reality outside of nature; it makes no claims for or against the existence of God - Robert J. Schneider Ph.D. Berea [Christian] College
" Religion" on the other hand has been variously defined. The U.S. Supreme Court said in the late 1800's that "the term 'religion' has reference to one's views of his relations to his Creator, and to the obligations they impose of reverence for his being and character, and of obedience to his will." Davis v. Beason, 133 U.S. 333, 342 (1890).
A typical dictionary definition usually defines "religion," as does the American Heritage College Dictionary (3rd ed.), as "[belief in and reverence for a supernatural power or powers regarded as creator and governor of the universe; a system grounded in such belief and worship."